Hajimete no Dai Keiren Special Guide | Decoding 84 Titles of Numerical Intensity

340 Climaxes. 6,690 Convulsions. 10,200cc of Squirt. Numbers as Ammunition.

Three numbers always open the title. Climax count. Convulsion count. Squirt volume in cc. The series’ record highs: 340 climaxes, 6,690 convulsions, 10,200cc of squirt. Each figure comes from a separate title, but all are presented as measurable quantities from a single AV production.

S1 No.1 Style program: “Hajimete no Dai Keiren Special” (First Great Convulsion Special). The first installment launched in March 2017. As of February 2025, the catalog stands at 84 titles. Nearly every title follows the same format: ”◯ Climaxes! ◯ Convulsions! ◯cc Squirt!” followed by the actress’s name and “Eros Awakening — First Great Convulsion Special.”

Eighty-four titles. Eight years. Roughly one per month. On a catalog shelf, the spines align almost identically. The only variations: the actress’s photograph and those three opening numbers.

This article examines how to read this shelf of 84. Which titles form the series’ backbone? We’ve organized the entry points by era.

The Series’ Identity — How S1 Measures “Eros Awakening”

First essential fact: this is an S1 No.1 Style flagship program. S1 (S1 No.1 Style) was established in November 2004 and anchors the AV industry. For over 20 years, the studio has maintained an exclusive roster of performers and consistently released approximately 25 new titles monthly. Within S1, “Hajimete no Dai Keiren Special” occupies a position designed with specific intent.

That intent crystallizes in a single phrase: “Eros Awakening.” The term appears in every title and encapsulates the program’s core: taking fresh debutantes or long-faced mid-career performers into territory inaccessible through standard shooting. The selection favors women not yet at their peak — emerging talents rather than established icons.

The inaugural title launched March 16, 2017, starring Yua Mikami (三上悠亜). “National Icon Eros Awakening — First Great Convulsion Special” positioned the series with marquee talent from the outset. Since then, two patterns have run in parallel: new exclusive performers shot shortly after debut, and established stars exploring new territory.

The production methodology can be reverse-engineered from title structure and editing. Extended foreplay, stacked stimulation via toys, aphrodisiacs and electric wands, concentrated polcio assault, sustained consecutive climaxes, no breaks for recovery. The approach builds physiological response through deliberate construction rather than organic escalation.

The numbers record the outcome. ◯ climaxes means staff literally counted with a counter. ◯ convulsions reflects observed lower-body muscle responses. ◯cc of squirt derives from absorbent sheet weight differential. None of these constitute rigorous scientific measurement, but within the series they operate as consistent relative units.

Decoding the Title Formula — What the Three Numbers Mean

The numerical sequence opening every title functions as the series’ catalog identifier. Arranging all 84 reveals substantial variation within the same program.

Climax counts range from approximately 90 to 340. The low end: 92 climaxes in the original March 2017 release. The high end: 340 climaxes from an October 2024 gravure entertainer title. Numbers show upward trajectory over time, with the past three years averaging above 150 climaxes.

Convulsion counts span 3,000 to 6,690. Squirt volume ranges 1,300cc to 10,200cc. The 10,200cc record was set in January 2021 by a slender actress with incontinence tendencies — equivalent to five 2-liter soda bottles. That figure remains cataloged.

Numerical distribution varies completely by performer. Some excel at sustained climaxes. Others produce anomalous convulsion counts. Still others achieve exponential squirt volumes. The peaks and valleys across the three numbers allow rough prediction of each actress’s reactive profile — the system is designed precisely for this.

Title variations appear at the end. “Eros Awakening” is the baseline. Some titles add modifiers: “Career-Best,” “30,000 Consecutive Thrusts,” “Triple-Intensity Convulsions,” “Triple Incontinence Non-Stop.” These emphatic additions cluster on productions carrying loads exceeding normal parameters.

This numerical formula exists nowhere else in S1’s lineup. Best-of and compilation series typically center titles on actress names; S1’s numerical-first naming is unique to “Hajimete no Dai Keiren Special.”

The formula’s secondary effect: viewers can track “record-breaking” across releases. Chasing series-wide “highest climaxes,” “highest convulsions,” “highest squirt volume.” Checking which title holds each record. This series stands as one of the few adult franchises where sports-record viewing logic applies.

Three Reactive Types — What the Numbers Reveal About Each Actress

Lined up, the 84 entries reveal three patterns by performer.

Type One: climax-dominant group. Actresses recording 200+ climaxes per title, characterized by rapid-onset responses and repeated orgasms in tight intervals. This includes the series-record 340-climax gravure title and the 220+ climax releases.

Type Two: convulsion-dominant group. Mid-level climax counts paired with 5,000+ convulsions as full-body muscle response. These actresses experience prolonged lower-body continuation after orgasm, visible in counter tallies. This pattern dominated mid-period productions (2018-2020).

Type Three: squirt-volume dominant. The 10,200cc series record emerges here — actresses reaching extreme quantitative levels during climax. The “cc” unit carries intuitive body-knowledge, often functioning as the decisive factor in title selection.

Type classification emerges instantly from the opening numbers. Within series selection logic, this metric holds practical value. “Today I want maximum climaxes,” “I want heavy squirt” — the system enables mood-specific single-title selection.

Entry Routes — Six Titles Across Eras and Performers

Running all 84 past viewers with “pick freely” isn’t realistic. Across three axes — era, performer type, numerical trend — we’ve narrowed to six essential titles. These function as entry points for grasping the series’ skeleton.

Route 1: To Confirm Series Origins → March 2017, Yua Mikami Starrer

Title One. Released March 16, 2017 — the series’ genesis point. Opening numbers: 92 climaxes, 3,600 convulsions, 2,300cc squirt. Compared to later work, the figures read modest, yet the series’ directional thrust was already locked at this stage.

Star: Yua Mikami (三上悠亜). Former SKE48 member, called the “national icon” even pre-AV. Already top-tier S1 exclusive at this point. Launching the inaugural title with this caliber of talent signals the program’s seriousness. Not a new-talent trial run — a marquee-performer launch statement that symbolizes the series’ concept.

Early-era productions contain breathing room in shooting duration and technical density. That margin becomes precisely the reading key for tracking the series’ evolution. From 2017 through 2025: how did the numbers inflate? The first title as baseline standard.

The format of frontloading numerical values was perfected at this inaugural stage. The subsequent 83 titles’ adherence to identical naming protocol affirms that the initial formula locked the standard.

Route 2: To See Mid-Period Exemplar → September 2023, Miyuu Kohinata Starrer

Released September 8, 2023. Titled “Ultimate Amateur,” this features Miyuu Kiyohara (originally credited), recording 222 climaxes, 5,500 convulsions, 2,700cc squirt. Now performing as Miyuu Kohinata (小日向みゆう), the actress carried a different stage name at series entry.

Mid-period archetype. The numerical balance lands high across all three metrics — no single category overshooting. The “all numbers elevated” type. The distribution reflects unbiased reactive characteristics, making it an ideal entry for viewers wanting to experience the series’ framework orthodoxically.

2023 marked S1’s parallel phases: new-talent discovery and existing-roster reconstruction. Both strategic aims converge in this title’s positioning. The eventual career-name transition remained unknown at shooting — retrospectively, this single release marks a performer’s career inflection.

Route 3: To See Numerical Extremes → December 2023, Yuka Murakami Starrer

“20-Year-Old Translucent Beauty Eros Awakening Career-Best Great Convulsion Special” — the subtitle framing the December 8, 2023 release. Numbers: 220 climaxes, 5,500 convulsions, 2,300cc squirt. The “Career-Best” modifier appears in the title itself.

“Career-Best” represents a judgment that the performance transcended normal parameters. Among 84 titles, only a handful earn this designation. Yuka Murakami (村上悠華) headlined this threshold-pushing milestone. Within the series, swapping “Hajimete” (first) for “Career-Best” signals that on-set feedback exceeded standard parameters.

The production record shows 220 climaxes substantially outpacing series average at that time. “Twenty years old” and “translucent beauty” integrate into the record-updating context — structural specificity of the numerical-assault format. A production remembered as one of the series’ numerical apotheoses.

Systematic viewing across the series: extracting only “Career-Best” titles and lining them up reveals the breadth of the series’ adaptive deployment patterns. Standard version as reference point.

Route 4: To See Enhanced Variant Format → February 2024, Marin Mita Starrer

Released February 9, 2024. Numbers: 186 climaxes, 4,602 convulsions, 3,200cc squirt. Title closing diverges from standard “Great Convulsion Special” — this reads “Triple-Intensity Convulsion Special” instead, signaling an enhanced variant format. Loads exceeding normal standards receive this emphatic modifier.

Marin Mita (三田真鈴) holds high positioning within S1’s exclusive roster. Series appearance represents a marquee performer repositioned through the “Eros Awakening” framework — a case study in flagship-actress reconfiguration. Numbers sit in upper-middle range across all categories, paired with shooting construction warranting “Triple-Intensity” framing. The series operates two parallel execution modes: new-talent insertion versus established-star reconstruction. This title exemplifies the latter.

This production as enhanced derivative beyond standard “Great Convulsion” serves as the variant deployment archetype. Among variant notations — “Career-Best,” “Triple-Intensity,” “Triple Incontinence,” ”& Great Deluge” — “Triple-Intensity” signals single-title load intensification. The entry point for deeper consumption after experiencing standard editions.

Route 5: To See Record-Setting Title → October 2024, Kiho Kanematsu Starrer

Released October 4, 2024. Series record: 340 climaxes. Supporting numbers: 5,800 convulsions, 2,900cc squirt. Star: Kiho Kanematsu (金松季歩), a gravure entertainer with crossover-media profile whose AV entry generated industry-wide discussion.

The 340-climax figure: multiply the inaugural 92 by 3.7. Eight years of evolution across all dimensions — shooting assembly, toy-and-substance methodology, climax-count precision, every variable changed, outputting this number. One title summating the series’ complete arc.

Production design optimizes for consecutive-climax maximization. Structuring prioritizes the “climax count” metric; the other two categories rise in tow. An outlier production in series history. 340 represents the imagination of staff fingers pressing counters — the on-set burden becomes visceral.

The gravure-entertainer context intensifies this title’s record status. A mainstream-media-active performer reaching 340 inside AV creates the conceptual core itself. This number gap forms the franchise’s essence. Singular positioning within the series as distinct category.

Route 6: To Verify Current Achievement Level → February 2025, Rika Natsuzora Starrer

Released February 7, 2025. Current series-latest title — 218 climaxes, 4,400 convulsions, 2,850cc squirt. Star: Rika Natsuzora (夏空りか), described in-title as “Pure yet highly sexed, ultimate sexual supernova.”

This 84th-position entry represents shooting methodology at fullest maturity. Compared to 2017 origins, numerical metrics, construction, and editing register substantial transformation. The on-set procedure’s refinement produces 218 climaxes now cataloged as standard mid-range — eight years ago this was a single-title peak. The contemporary reality gap.

Newest-entry starting positions make logical sense given the series characteristic: identical title formula means entry-point placement becomes irrelevant — experiencing any title constitutes “First Great Convulsion Special” engagement. Rather, reverse-chronological viewing — starting newest, retracing toward the 2017 baseline — permits tracing numerical inflation backward, unlocking trajectory-study enjoyment.

Inside the Shooting Methodology — Why These Numbers Emerge

Series production diverges from standard single-release assembly. Comparing disclosed information with on-screen observable patterns reveals consistent procedural routines.

First: extended foreplay duration. While standard single titles allocate 10-minute foreplay, this series devotes 30-60 minutes to foreplay and toy assault. Electric wands, vibrators, aphrodisiacs, clitoral suction, polcio-targeted fingering. Sequential tool rotation accumulates pre-climax states with obsessive precision.

Second: unbroken climax sequencing. Standard protocol incorporates brief post-climax recovery; this series eliminates breaks, transitioning to next stimulation immediately. Continuous stimulus delivery before physical recovery yields climbing climax counts. Most 200+-climax titles adopt this “break-free” structure.

Third: measurement-staff deployment. On-set personnel dedicated to tallying climax count, convulsion count, and squirt volume. Counter in hand, tracking live during shooting. Post-production review confirms measurements; numbers are finalized for titling.

Series numbers emerge from dual mechanics: deliberate on-set design plus measurement execution. Not spontaneous outcome. The program systematically constructs “those specific numbers.”

Eight Years of Progression — Why Numbers Inflated

Pairing 2017 first title with 2025 latest: numerical inflation stands stark. Climaxes: 92 to 218. Convulsions: 3,600 to 4,400. Squirt: 2,300cc to 2,850cc. Simple averages show 1.5-2.3x uplift across metrics.

Causes remain multiple: shooting-technique maturation, measurement-criterion shifts (stricter or looser), extended shoot duration, multiplied toy-and-substance diversity, additional camera deployment improving detection precision. Official materials don’t disclose factorial contribution — results remain recorded.

Observable series-wide trend: post-2021 one-step elevation, then post-2023 another step-up. Two-stage inflation. Catalog prefix shifts — “ssni” to “ssis” to “sone” — nearly coincide with these jumps, suggesting S1’s packaging strategy drove coordinated evolution.

Eighty-four titles spanning eight years. Approximately monthly cadence marks stable program supply velocity. No surge spikes, no sudden halting — steady accumulation producing today’s 84. Continued pacing past 2026 makes 100-title threshold a timing question.

Derivative Releases — Complete Best 100-Scene Compilation

Alongside 84 series core titles exists a complete best compilation. A digest collection covering 40 actresses who’ve starred in the series, distributed under the S1 GIRLS COLLECTION umbrella. 100-scene total runtime serves viewers seeking cross-series comprehensive experience.

Forty actresses represents approximately half the 84-title performer count. Best-compilation alone accesses nearly half the entire series’ roster — anthology comprehensiveness stands exceptional.

S1 constructs the series’ economic ecosystem through core and best-edition duality. Best-edition purchase delivers 40 actresses instantly but compresses individual runtime. Standard-edition vs. best-edition selection determines engagement stance.

Series-total immersion: best edition. Specific-actress or specific-record deep-dive: core edition. This fork becomes the decision point governing series orientation.

Ideal For

• Viewers seeking numerical-assault gratification: 340 climaxes, 6,690 convulsions, 10,200cc squirt — numerical presentation exists nowhere else in series catalogs. Counter-pressing becomes the experience framework
• Viewers wanting to witness S1’s new-talent development in real time: Exclusive-debut-adjacent casting clusters densely; years-later top-tier performers’ pre-ascendant “Eros Awakening” moments stand documented
• Viewers favoring sustained-climax long-duration-assault formats: Series construction prioritizes sustained multi-stimulation over brief-duration orgasm; per-title climax density runs elevated
• Viewers seeking to experience series-catalog synchronic viewing: All 84 share identical title formula; collective viewing exposes S1’s eight-year catalog as tangible artifact

2017 Through 2025. Eighty-Four Titles — The Numerical Shelf Continues Accumulating

218 climaxes. 4,400 convulsions. 2,850cc squirt. Numbers etched into February 2025’s latest release, completing the 84th catalog entry. From the 92 climaxes, 3,600 convulsions, 2,300cc squirt of the 2017 baseline: eight years onward.

Catalog shelf spines align nearly identically. Only variation: actress photograph and those three opening numbers. Interpreting that variance determines series experience. Among 84 titles, a perfect numerical distribution exists for every preference.

Free video sites stream some digest editions, yet shooting assembly rationale and per-actress reactive micro-variation surface only through full FANZA releases. The 30-minute digest edit cannot convey extended-foreplay intentionality or break-elimination construct design. Supporting a favorite actress means acquiring that one complete title through authorized channels. 2026’s calendar will place 85th spine on the shelf. When that moment arrives, what three numbers appear at the opening? The series’ record remains update-pending.

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