Hitomi is a recent graduate and moves to stay at her aunt's house in Tokyo while looking for a job. But her aunt has two extremely naughty boys. Hiroshi is the eldest brother and is extremely cunning and perverted. He came up with many tricks to touch Hitomi's giant breasts. One time when she spied on Hitomi to change clothes, his penis was already erect. Hitomi discovered it, but instead of scolding her, she helped Hiroshi soothe his penis...