The protagonist of the story is Suou Akira, a young Japanese boy who miraculously recovers from an incurable disease. However, he is still very weak and has not fully recovered, so his mental and physical abilities are very reduced. At this time, his academy introduces an unexpectedly difficult exam, which Suou will never be able to pass and which threatens him with expulsion. On the advice of his attending physician, the boy goes to the local women's dormitory to meet private tutors. The girls see Suou's "potential" and force him to stay in their dorm. And so begins our hero's hilarious lecherous adventures! Nanayu Momoka is a tall student with size five boobs, loves cosplay and Chinese dresses. She teaches our hero how to draw. Takemi Kasumi, a blond girl also with a size five, is our protagonist's older sister. Takigawa Shiori - a brunette with a short haircut and of course a size five breast, swim coach. Su Aka is a funny and funny little sister with small boobs. Takemi Eriko is a long-haired beauty with a different personality from everyone else...