With graduation approaching, Toko, the teacher responsible for the senior class, struggled with a group of delinquent adult-student role-play characters. She worked tirelessly to keep them from repeating the year and proudly saw every one of them graduate. After the ceremony, she lingered alone in the empty classroom, reflecting on their time together. Suddenly, the door flew open and the former students approached her with menacing smiles, ready to deliver a twisted mixture of gratitude and resentment...