Misa, a teacher in her mid-twenties, married a colleague and gave birth to Kojiro. However, due to their drifting lives, Misa and her husband divorced when Kojiro was in middle school. Having grown up watching his parents, Kojiro naturally chose the path of an educator. Meanwhile, Misa had planned a trip with Kojiro and her ex-husband for the first time in a long while. However, on the day before the trip, her ex-husband suddenly couldn't go. So, Misa decided to travel with just Kojiro. During that trip, they…
