Shota, who was separated from his mother in his childhood, had his late father remarry Claire, who was 20 years his senior, when he was in middle school. Shota got along well with Claire, who was close to his age, and eventually began to love her as a woman. Meanwhile, Claire, who was confused about a proposal of dating from a colleague, invited Shota to a hot spring to tell him about it. Shota, who was invited, also thought this was an opportunity to convey his feelings.
