
I ended up teaching my girlfriend’s younger sister, Ruka, how to study. Even though she’s a high school student, she’s still a child, innocent and cute. She seems to have little knowledge about sex, and sometimes her underwear is visible or she wears see-through lingerie… Moreover, her breasts are large for her age. Even knowing she’s my girlfriend’s sister, I’m looking at her younger sister as a ‘woman.’ I realized I was kissing her young and soft lips. Ignoring Ruka’s surprise, I was passionately indulging with my tongue. Probably her first kiss. Perhaps due to her lack of sexual knowledge, she doesn’t seem to grasp the situation yet. There’s little sign of her resisting… Is she really this innocent…? The more I realized how despicable my actions were, the more my penis became erect.










*Although it is a classic development, Ruka plays the role of her sister's boyfriend and ad-libs. There is no dialogue at all, and the lines are the same, so it's boring... When we kiss from the beginning, our tongues intertwine... No resistance... At the end, for some reason, he seduces Ruka and urges her to cum on her tongue. It's a shame that it's not as erotic as the script...
*It's insanely good
She's playing a younger sister, but her chest is seriously impressive – definitely rivals an adult's. The way she's flustered during her first kiss feels so real, and the contrast between her innocence and sexiness is just… incredible.
*Ruka Itoi is courted by her fourth cute sister. Tendo has been dating his girlfriend for two months and is still frustrated because she hasn't let him have sex with her, and while he was teaching Ruka, his girlfriend's younger sister, he gets horny and has sex with her. While repeating ``No,'' she doesn't resist even when her breasts are rubbed or cunnilingus, and she easily accepts blowjobs and penetration, and Ruka is almost in a tuna state, but she seems to be feeling it. Toward the end, Ruka transforms into an erotic woman and seduces her by wearing a see-through cosplay and saying, ``I'd rather have sex than study.'' It's the first time I've seen Ruka Itoi, but she has a cute face and beautiful big breasts, and she looks good in the uniform, so I want her to go to school on the train in a sailor uniform, ``I'm a teacher, seducing big-breasted students without a bra.'' It seems like four titles have been released with almost the same title, but it hasn't been made into a series! The situation is exquisite, so I want it to continue with Nana Miho and Airi Nagisa.
That innocent smile, those little unguarded gestures, and her perfect bust for her age… I just can't look away! The kiss scene is so raw and new, but it feels surprisingly natural. I'm completely hooked on Ruka's freshness as she's led by the older guy. The setting is relatable, and the little sister dynamic is strangely exciting. The camera work is natural, really capturing Ruka's cuteness. She's innocent yet sexy, pure yet bold – that gap just stole my heart!