The older sister with a huge chest attracts her two mischievous younger brothers who want to squeeze her. Hitomi just graduated and moved to her aunt's house in Tokyo to look for a job. But her aunt has two very naughty sons. Hiroshi is the older brother and a very cunning and lewd person. He uses many tricks to touch Hitomi's large breasts. While he is watching Hitomi change clothes, Hitomi notices her body stands still, but instead of scolding him, she calms Hiroshi down.