ONSG-100 Review: Big Tits Call Girls Koume Ena & Matsumoto Nanami

ONSG-100 is the latest entry in GAIN Corporation’s “Busty Delivery Health” series, this time with a rare double-casting of Koume Ena and the previously Fitch-exclusive Matsumoto Nanami. There are 4 scenes with Scene 2 and 3 having a titfuck cumshot.
Table of Contents
TF = Titfuck, AJ = Assjob, TJ = Thighjob
Movie Details

| Movie Name | 巨乳デリヘル特別版 爆乳メンエス 裏オプ解禁! ONSG-100 Big-Breasted Delivery Health Special Edition: Big-Breasted Men’s Massage with Hidden Options Now Available! |
| Studio | GAIN Corporation |
| Release Date | 27th January 2026 |
| Pinching Finish (挟射回数) | 2 Titfuck Cumshots (2 パイズリ挟射) |
Movie Review
Scene 1 – Titty Fuck + Sex

The first scene stars only Ena-chan in a 1-on-1 intercourse sex. There are 2 titty fuck segments over 5 minutes long in total, with her oiling up her tits for the second one. Sadly neither finished, and we only got a rather weak jerkoff cumshot on her breasts.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Scene 2 – Sex Scene (1 TF Cum)

Scene 2 is Nanami-chan’s turn for a 1-on-1 sex scene. The titty fucking was much weaker here at only less than 3 minutes, but personally I prefer this one more as she did get fully naked.

But more importantly this one had a proper paizuri finish where the guy straddled her tits for a good minute before ejaculating. Not the most impressive cumshot, but it’s very much visible and for me it’s extra special as the last one we saw from her was over 6 months ago in OFES-009.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Scene 3 – Massage + Titty Fuck (1 TF Cum)

Scene 3 finally brings the two actresses together for an FFM outercourse scene. They give the guy an oiled body massage and tease his nipples before taking out his erect cock. They take turns titty fucking him and then give him a double breastfeeding handjob, before going back to a double titty fuck this time to completion.

This scene was all I ever wanted when I saw this movie announcement. A double paizuri finish was the only logical choice to this very rare occasion where they spent so much to get not only 1 but 2 high-profile actresses. It was not completely hands-free, but their tits are big enough that those milkers are still actually stroking the penis.

The actual cumshot itself had a few good spurts flying out, but the volume was somewhat lacking so it can be hard to see unless you were really looking for it. Still for me this was quite jerkable given the occasion and ladies involved. Plus their surprised reaction to it really added to the enjoyment for me.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Scene 4 – Sex Scene

The last scene is another threesome scene with full intercourse sex as each lady gets a creampie. There were a couple of minutes of titty fucking at the start but no finish. Still it’s a nice “warm-up” for Scene 3, especially with them being mostly naked. And I really liked their chemistry here especially Ena-chan who keeps begging for her turn to get fucked.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Summary
This is a case where my dick liked this more than my brain. If we’re looking at just the titty fucking, it definitely fell a bit short than some of their previous entries like ONSG-099 and ONSG-092. But there is something to be said when you bring in 2 of my favourites that I have watched (and jerked to) for many years. And the double titfuck cumshot more than justified the need for this collaboration.
It did feel like Nanami-chan was getting the short end of the stick when it comes to the titty fuck durations, probably because of Ena-chan’s bigger tits (rightfully) deserving more attention. But she did get the 1-on-1 finish which is a perfectly acceptable trade for me. Plus if you’re a fan of hers, chances are you will love Ena-chan as well so it’s still a win-win.
This movie also marks the return of Nanami-chan since she quietly parted ways with Fitch studio. It’s a shame that she had wasted 2-3 of her prime years with bad exclusivity deals, and through no fault of hers. This was definitely a good way to revitalize her career, and hopefully she will remain active in 2026 and beyond. And a man could only dream of her doing more collabs like this especially if she gets to mix it up with the new generation of busties like Haruna Noa and Shishido Riho.

Actress Information
| Actress Name | 小梅えな (Koume Ena) |
| Date of Birth | 30th November 1999 |
| B-W-H (Cup Size) | 103cm-63cm-94cm (K) |
| Related Tags | Japanese, Curvy (豊満), Huge Tits (爆乳), Natural Tits, Big Ass (巨尻) |
2 responses to “ONSG-100 Review: Big Tits Call Girls Koume Ena & Matsumoto Nanami”
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If I’m gonna choose between Ena and Nanami’s solo scenes in terms of titty fuck horniness, it’s got to be Nanami. Dirty talk and consistent dialogue carried her scene, plus she’s the one who got a tittyfuck cumshot. If you want to cum on her tits, either in between or all over her tits, after sex, that’s how you must do first (not when your cock is leaking before starting the finishing act 🤭). Plus, about a minute of straddling before the cumshot? That’s a winner in JAV standards. In Western porn, a titfuck before the cumshot after sex takes longer than JAV movies on average, since the actors there can stand their bodies longer.
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Agreed on all points 😁 For me Nanami’s scene definitely felt a bit more arousing because I’m a huge fan of hers and she hasn’t had a movie in months.
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