That ... I want my sisters to drink your semen ... Shunsuke, who returned home during spring break after being called by his parents' house, reunites with his three older sisters for the first time in a while. The eldest daughter, Asaka, the second daughter, Tsukino, and the third daughter, Yuki, were suffering from an unexplained illness that caused seizures. And the remedy to control the seizure was semen ...! Shunsuke is begged by tall and preeminent style sisters and made to ejaculate ...! The older sisters who are in estrus no matter where they are, greedy Shunsuke's semen! In addition, Haruka, a childhood friend and younger sister who lives next door, joins us, and it's ridiculous! The days of being squeezed out of semen to replace the older sisters of the super-brother complex who like their younger brother too much begin!