MIDA-570 Review: Girlfriend’s Younger Sister Koikawa Komomo Careless K-Cup Tease

MIDA-570 stars MOODYZ rookie Koikawa Komomo in a typical “Girlfriend’s Younger Sister” storyline. She also happens to be a gravure idol that the guy is a huge fan of, all while being hilariously careless at home with constant nip slips. There are 5 scenes in total, with Scene 3 and 4 having titty fuck cumshots.
Table of Contents
TF = Titfuck, AJ = Assjob, TJ = Thighjob
Movie Details

| Movie Name | 彼女の妹はグラドル爆乳Kカップ!乳首は絶対死守と見せかけて家の中では超隙だらけ!オッパイが大き過ぎて何度も無自覚ポロリ。 MIDA-570 Her Younger Sister Is A Glamour Model with Massive K-cup Breasts! She Pretends to Be Extremely Protective of Her Nipples, But At Home She’s Incredibly Careless! Her Breasts Are So Big That They Slip Out Unintentionally Many Times. |
| Studio | MOODYZ |
| Release Date | 21st April 2026 |
| Pinching Finish (挟射回数) | 2 Titfuck Cumshots (2 パイズリ挟射) |
Movie Review
Scene 1 – Sex Scene

Scene 1 starts with Komomo doing some cleaning while wearing a super tight shirt that keeps popping open, until the guy couldn’t contain himself and pounces on her. Some breast sucking and cunnilingus follow, leading into a blowjob and titty fucking before transitioning into intercourse sex until he jerks off on her chest.

Komomo-chan looked great here with how quickly she ends up mostly naked, but the overall scene vibe didn’t sit well with me. Her expressions and protests leaned heavily into a non-consensual feel which I’m not really a fan of, and it dragged down both the performance and overall eroticity quite a bit. The action itself was serviceable, but nothing particularly memorable to offset that awkward tone.

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

Scene 2 takes place in POV perspective with Komomo wrapped in a towel that keeps slipping off, giving “us” plenty of exposure as we grope her tits and finger her before she sees our erection and gives us some blowjob and titty fucking. This leads into sex until we finish on her belly.

Much better scene with the POV fantasy being a huge plus, especially with Komomo-chan being fully naked right from the start, and the vibe was much improved. Komomo-chan was still somewhat protesting, but in a much weaker and almost inviting way. She even repeatedly mentioned that she’ll keep it a secret from her sister. Sadly the paizuri didn’t get a proper finish here which was a real shame given the POV setup. The final segment also switched to a side spooning view which kind of broken that immersion at the worst possible time.

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

Scene 3 sees the pair already naked and making out in the bathroom. The guy soaps up Komomo’s breasts and thoroughly fondles them, then reaches down to give her pussy some love as well. She responds by giving him a reacharound handjob, then sits down in the bathtub and titty fucks him to completion.

The bathroom setup is right up my alley with Komomo-chan fully naked throughout, and I liked that they actually washed off the soap before getting into the paizuri. The titty fucking itself lasted around 3 minutes which is a solid duration, and the finish absolutely delivered with a massive blast that even splattered across the side of her face. While the scene itself was not fully POV, the ending segment was, and that’s what counts for me when it comes to “jerkability”.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Scene 4 – Blowjob + Titty Fuck (1 TF Cum)

Scene 4 takes place with the girlfriend cooking in the background while the guy gets handsy with Komomo again. A straightforward outercourse scene with breast fondling and sucking, leading into a blowjob and titty fuck to completion.

You’ll need to suspend your disbelief a bit with the pair moaning and pounding while the girlfriend just carries on cooking without reacting at all. Definitely took away from the intimacy factor for me, though at least she wasn’t interrupting the scene directly like in OPPAI’s movies. Komomo-chan being half clothed also wasn’t ideal, but her chest stayed fully visible which helped salvage the visuals. And what a visual it was with a very nice cumshot. While nowhere near as good as the last one, it was still pretty satisfying to see.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Scene 5 – Sex Scene

For the last scene, Komomo flips the script by putting on a skimpy bra and actively seducing the guy. Some breast play leads into a 69 segment before transitioning into intercourse, ending with a facial finish.

Finally we get a more naughty side of Komomo-chan which I much appreciated, especially with her dropping lines like “Gaman dekinai” that’ll get any man going. She was also fully naked again which helped the eroticity. Sadly there wasn’t much paizuri here outside of a brief one during the 69, and only having a single cumshot made it a bit underwhelming for a finale, especially coming off the high of the previous scenes.

| Performance (演技) | |
| Eroticism (エロ度) | |
| Pinching Technique (挟むテク) | |
| Finish (射精度) | |
|
Average
|
|
Summary
This one was like riding a rollercoaster. The story itself was bog standard for the “Girlfriend’s Younger Sister” setup, and the first scene didn’t do it any favours. But Scene 2 and 3 really carried the movie, with the latter being the main reason to check this movie out. It’s just a shame they couldn’t maintain that momentum into the final scene, which made the overall experience feel a bit uneven.
As for Komomo-chan, this was another solid showing after I raved about her previous work. The early scenes were kinda rough with her almost pained moanings, but the last scene was much better. Her body also got a lot of attention here which it rightfully deserves, and I’m very hopeful to see how she develops in future releases.

Actress Information

| Actress Name | 恋川こもも (Koikawa Komomo) |
| Date of Birth | ?? ?? ???? |
| B-W-H (Cup Size) | ??cm-??cm-??cm (K) |
| Related Tags | Japanese, Huge Tits (爆乳), Natural Tits, Curvy (豊満) |






































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