Mayuki is an extremely beautiful teacher who cares about others, so she is loved by many people, and Yuki is also one of those people. This time, while preparing for the school festival, Yuki accidentally got wet. Because she was worried that her student would catch a cold, Mayuki took him home to shower and change clothes. Today is also the day her boyfriend came to see her after three months of separation. But just because the subway stopped working, he gave up, making Mayuki feel lonely and disappointed. Since the train is no longer available, Yuki will also spend the night here. Looking at the teacher who was drinking alone, Yuki couldn't resist her beautiful body and decided to go over the limit! Although he did not agree at first, Yuki's big cock and strong health quickly conquered Mayuki. She ignores her status as a teacher, ignores her heartless boyfriend and indulges in sexual pleasure with her student...