Takumi Musashino suffers from a terminal illness and agrees to try an experimental treatment which turns him into a girl, and also into a complete and utter raging slut. Watch as Takumi goes from an almost altruistic loaner of his female body to hopeless fellow male virgins to a rock bottom literal whore!
Kouta is the school's idol loved by all - his teacher, and his fellow students. At least the one teacher and three students we see. Who are all girls. And they don't actually "love" him all that much, they just want to fuck his brains out.