CHRV-026 My Little Sister Was Expelled From School Because Her Boobs Are Too Big

One day, my younger sister suddenly stopped going to school, and apparently she was expelled from school because her boobs were too big. The older brother encourages the younger sister, but it doesn't work at all. My brother stops Sikotaro-sensei, who was messing around with his little sister, but they get into a big fight. However, the quarrel subsides due to her younger sister's colossal breasts, and Shikotaro swears to the two of them to lift their expulsion from school. Will my sister, who has been safely released from school expulsion, go to school properly?