Stop it! Onee-Chan!! I’m Gonna Cum!!

The main character, Yuu, has an older sister, Miu, who has a serious brother complex. - One day, the excessive skinship between them gets exposed. - Miu was thus sent to a boarding school with the aim of correcting her wrong behavior. - And thus, the two were separated. - But now, years later, Miu has graduated from school and returned home. - The new Miu has grown up to be so captivatingly beautiful that one can't help but admire her, - but in contrast to that, her behavior has become harsh and cold, much unlike before. - But deep down, Miu had not changed at all. - She is just putting up a front so that the siblings would not be separated again. - The moment the two of them are alone, her brother-loving side would resurface... - A sweet, older sister. - However, as far as Yuu was concerned, his sister is getting way too close to him. - So, fearing to be separated from his sister once more, he tries his hardest to reject Miu. - In order to return Yuu to the brother she used to love, - to make Yuu fall in love with her once again, - Miu seduces him using that kind of lewd approach. - Yuu gradually becomes unable to hold back, as Miu makes him long for her.​