Hiroshi-kun is a high school student who has been a shut-in for 10 years. Faced with this situation, his teacher decides to take a radical step: showing him her naked body to force him out of his seclusion.While the teacher invites Hiroshi-kun to leave his room so he can see her undressed, Hiroshi becomes overwhelmed with excitement, suddenly developing the ability of body possession.Now, armed with his new power, Hiroshi-kun takes over the bodies of both his teacher and his mother, engaging in all sorts of mischief with them. However, he is still not satisfied and sets out to find his childhood sweetheart, Rena-chan, who now works at a nearby hospital—but things won't go exactly as he imagined.
