
My girlfriend has a younger sister. Her name is Renna, and despite her still somewhat innocent appearance, she has incredibly large breasts. Moreover, she apparently doesn't have a boyfriend. I have secretly been in love with Renna for a long time. And then, that day came... While my girlfriend was away on a business trip, I assaulted Renna. Driven by desire, I kissed her, groped her breasts, and forcefully penetrated her vagina with my penis! To the sobbing Renna, I conveyed my love.

















I immediately noticed her strong physical presence from the start. Her chest volume is particularly striking, and my eyes kept drifting towards it with every movement. The pacing isn't heavy; it progresses calmly, with more focus on physical reactions than dialogue. I prefer the impression of her breasts swaying over the plot itself. This feels like a work with real substance.
Reina is, without a doubt, gorgeous. However, the sagging breasts weren't really my thing. It's not a bad cheating/fall-from-grace story, so if you're into her nude scenes, it might be worth a buy.
A boyfriend who's hitting on his girlfriend's sister, who's got a similar vibe to Reina. What's he even planning to do with his girlfriend? But the sister also seems to... have feelings for the boyfriend, and it all wraps up nicely. Doesn't feel forced, though.
I recognize the acting isn't the strongest, but I was able to enjoy this work without it being a distraction. People tend to focus on Reina's bust, but the scene in the 12th sample image, where her breasts are partially covered by the t-shirt and her slender waistline is emphasized, is truly exceptional. That bouncy bust combined with the vertical line of her waist... the contrast is incredible. The costume choices are also fantastic, and it's safe to say this is one of Reina's best works!
A story about him going wild with various Rinna-sans. She pretends to be innocent, but she's getting deep-throated relentlessly and doesn't even act tsundere? But her ass is totally falling for his dick. You can tell this guy's got skills...