Manatsu, a female student, visits the house of her classmate, Masao, who is a recluse. It was an errand that was asked by the homeroom teacher to deliver the prints. Manatsu, an honor student, accepts it and arrives at Masao's house. But when I pressed the intercom, no one answered. When he is about to leave, a large tree named Masao's father appears and calls his son a "bad brat". Angered by the words, Manatsu ignores the restraint and enters Masao's room. Then, as soon as Masao saw Manatsu's figure, he forcibly laid it down ...