It's all for our cute brother, after all~ We'll teach you everything you need to know! Souta, the protagonist, has started living on his own now that he's entered university. But his excitement about his new life was short-lived when his room was suddenly invaded by Yuki, his rough-looking, delinquent sister with a severe brother complex, and Mizuki, Yuki's best friend, whose innocent and demure appearance hides an even stronger obsession with Souta than Yuki's! One night, Souta was caught trying to sniff the scent of their freshly removed underwear out of curiosity. Just when he thought he was about to get scolded, the two of them pushed him down onto the bed with loving smiles and began an extreme "sex education" session. In no time at all, Souta loses his virginity to their relentless double service. From that day forward, he is thrown into a daily life of being constantly toyed with by their lewd temptations...! Homemade videos of simulated blowjobs and paizuris sent to his phone almost every day! At the limit of his endurance, a full double blowjob awaits! Approaching him in micro-bikinis that look like they're about to burst, followed by a double paizuri! And finally, raw impregnation begging! Intense double sex leading to simultaneous climaxes and thick, throbbing creampies deep inside their wombs! Will Souta ever find peace? (Nope!) (English product description provided by "MayoTL".) Please be aware that limited-time exclusive content is not included in the translated versions of products which have been translated via the Translators Unite project.