Yuki is a new teacher who has become Shota's homeroom teacher. At school, her big, bouncy breasts are the center of attention for the male students. This teacher comes to Shota's house for a home visit. Shota asks her to help him with his studies, and devises a plan to play pranks on her that are more extreme than those he plays at school. He also drops ice on her breasts to try to touch her huge breasts, and takes her in the bath...