Mother Natsu becomes concerned about her son as he approaches his college entrance exams, noticing strange behavior. When she tries to discuss it with her husband, he ignores her. Wanting to support her son during this crucial time, she feels increasingly compelled to do something. Meanwhile, her teenage son struggles to focus on studying, constantly plagued by pent-up sexual tension. Discovering his state, Natsu feels confused and uncertain, yet realizes she must take action.