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

Minamisawa Umika getting a titty fuck cumshot in SONE-781

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.

Movie Details

SONE-781 movie cover featuring Minamisawa Umika
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
StudioS1 NO.1 STYLE
Release Date12th 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)

Minamisawa Umika giving a titty fuck

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.

Minamisawa Umika getting a titty fuck cumshot in SONE-781
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)

Minamisawa Umika giving a titty fuck in a maid costume

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.

Minamisawa Umika getting a titfuck cumshot
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)

Minamisawa Umika giving an oiled titty fuck

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.

Minamisawa Umika getting a titfuck cumshot
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)

Minamisawa Umika giving a titty fuck

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.

Minamisawa Umika getting a titfuck cumshot
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.

SONE-781 movie cover featuring Minamisawa Umika
Overall Enjoyment
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Actress Information

Portrait photo of Minamisawa Umika from SONE-781
Image courtesy/copyright of S1 NO.1 STYLE
Actress Name南沢海香 (Minamisawa Umika)
Date of Birth30th August 2004
B-W-H
(Cup Size)
98cm-56cm-89cm (H)
Related TagsJapanese, Natural Tits, Big Tits (巨乳), Skinny (スレンダー)

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