A teacher who is strict with her students at school. A mother who is sweet to her son at home. This is the story of a mother who has both these tsundere personalities. She makes her son take extra lessons as punishment for not being able to solve a problem during class. In an empty classroom, she makes her son caress her with harsh words, and at home she gently serves him with sex! The lewd mother's rampage, not giving him time to dry off, continues!