This time, Shota's target is Mikuru Shiiba Shiiba, who has a cute smile and especially prominent breasts. Shota is recommended by his parents to stay at a private lodging and goes to Tokyo... He was worried about interacting with a family he didn't know, but he found out that Mikuru, who has big boobs, lives at the lodging, and he began to think about playing naughty pranks on her breasts.