The girl who moved in next door, Yanonobashi Tsubasa, is a college student living alone. She quickly becomes good friends with her neighbor, Shouta. Shouta is captivated by Tsubasa's large and beautiful butt! Taking advantage of Tsubasa's kind personality, he indulges in all sorts of naughty pranks! Tsubasa, feeling good, doesn't seem to mind at all, and the naughty acts escalate... even allowing him to ejaculate inside her!