Since he was young, Masaki has lived with just his father after parting ways with his mother. The memory of his mother, Keima, in Masaki's mind was kind and beautiful. Time passed, and on the day Masaki turned 25, he received a letter from his mother. It said she wanted to meet after 20 years. Masaki happily decided to meet her. The place for their reunion was a hot spring town where the three of them had gone together in the past. At this time, Masaki himself hadn't yet realized that his admiration for his mother had turned into romantic feelings…
