A popular female teacher named Miwa continues teaching at school even after marriage. Respected by her students, she conducts her daily classes with dedication and warmth. One day, while commuting on a train, she witnesses a bullying incident involving her students. Among them, suffering greatly, is Kota, a student whom Miwa has quietly taken notice of before. Unable to ignore the situation, she bravely intervenes. Her actions leave a deep impact on Kota, making him realize the feelings he has secretly harbored for Miwa. From that day on, their relationship takes a new turn.