SONE-781 Review: Minamisawa Umika Masturbation Assist with H-Cup Tits

SONE-781 stars S1 rookie Minamisawa Umika in a full-POV masturbation support movie. All 4 scenes end in a titfuck cumshot, though some are significantly weaker than the other.
Table of Contents
TF = Titfuck, AJ = Assjob, TJ = Thighjob
Movie Details

| Movie Name | 全身が勃起する超肉体エロティック映像 4K機材撮影×Hcupふんわりマシュマロ乳 南沢海香のパーフェクトオナニーアシスト SONE-781 A Super Erotic Video That Makes Your Whole Body Erect. 4K Equipment Shooting X H Cup Soft Marshmallow Breasts. Minamisawa Umika’s Perfect Masturbation Assist |
| Studio | S1 NO.1 STYLE |
| Release Date | 12th August 2025 |
| Pinching Finish (挟射回数) | 4 Titfuck Cumshots (4 パイズリ挟射) |
Movie Review
Scene 1 – Blowjob + Titty Fuck (1 TF Cum)

The only outercourse scene in the movie, this one starts with some breast worshipping and nipple teasing, before Umika sucks “our” dick and titty fucks it to completion. The paizuri only lasted about 2 minutes, but it was in my favourite position and Umika-chan was mostly naked for this one. The titfuck cumshot was one of the best ones she had done so far, with multiple spurts jumping out of her cleavage, similar to the one by Minami Haru.

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

Scene 2 has Umika in a sexy maid outfit. There is some titty fucking before they start fucking, and ends with the guy cumming while straddling her tits. The cumshot here wasn’t the best but still had one visible stream flying onto her neck. There’s also a little too much clothing on her for me to enjoy.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
Average | |
Scene 3 – Oiled Swimsuit Sex (1 TF Cum)

Scene 3 puts us in the perspective of Umika’s teacher who’s blessed with the opportunity to oil up her curvy body in a school swimsuit. There’s a long segment of caressing and fingering before she gets down to service us. I liked the camera work in this one where you got many shots of Umika-chan’s face and shiny tits right up to the lens. The finish was another pull-out from missionary to tits straddling, but for this the guy could barely get his dick between her tits before he started cumming already.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
Average | |
Scene 4 – Tutor Sex Scene (1 TF Cum)

The final scene has in a private tutoring session with Umika-sensei, and she notices we’re too distracted by her big tits. Cue some titty fucking into intercourse sex into pullout and tits straddling. Again. And this one was even worse than the last one where the guy only did a couple strokes with barely any semen coming out.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
Average | |
Summary
A solid movie that sadly falls short for my recommendation list. The first scene was great and definitely worth a watch, but after that each finish just got worse and worse. Umika-chan’s appearance is stunning but her acting still left a bit to be desired, and I would have liked to see her make better use of the ASMR theme.





















































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