Shouta-kun's mischief is going to explode again this time. Shouta-kun, who loves butts, is kneading the butts of the older sisters everywhere. Taking advantage of the fact that he is a child, he attacks without mercy. Even the kind older sisters, while confused, accept Shouta-kun's naughty pranks, and eventually... Ah! I wish I could be reborn as Shouta-kun!