Tooru's step sister Sayaka has returned with a heart full of jealousy and malice. She's taking on her brother and the Princess System with a new round of dirty tricks. When Shihoudani is caught in the cross fire, Tooru knows he has to put a stop to her once and for all. However, it looks like the only way he will ever achieve peace with his family is to leave Fujimori Academy forever. Shihoudani, Mikoto and the whole school get behind Tooru as he makes his fateful decision.