"She's shy, timid, and weak to pressure" I was attracted to my girlfriend's sister, and I secretly had sex with her. I'm such a terrible person. - Masuzu Mita

The protagonist engages in a secret, illicit sexual relationship with his girlfriend's sister, Masuzu Mita, in a home setting, involving various explicit acts including blowjobs, vaginal penetration, and discussions of their feelings and the secrecy of their relationship.

1. [7:36]The protagonist and Masuzu Mita get together, with the protagonist sucking her pussy and talking about her body. · cunnilingus
2. [20:31]The protagonist instructs Masuzu Mita to perform a blowjob, and they discuss their secret relationship. · blowjob
3. [36:48]Masuzu Mita and the protagonist discuss their past sexual encounters and their feelings about the secrecy of their relationship.
4. [56:59]The protagonist and Masuzu Mita engage in another sexual encounter, with Masuzu Mita expressing her arousal and the protagonist preparing for climax. · masturbation
5. [1:14:48]The protagonist and Masuzu Mita keep going, with the protagonist fucking her in missionary and Masuzu Mita saying how good it feels and that she's about to cum. · anal
6. [1:29:45]The protagonist performs cunnilingus on Masuzu Mita, and they discuss their feelings and the intensity of their orgasms. · cunnilingus
7. [1:45:07]The protagonist and Masuzu Mita go again, with the protagonist fucking her doggystyle, then he creampies her. · creampie
8. [1:47:47]The protagonist and Masuzu Mita reflect on their past encounters and express their satisfaction with their relationship.