Rika wanted to ascertain whether her mother who has remarried is now living happily. In the city she visited, Rika met Seiya, a boy her age, popular yet somewhat compelling. Unexpectedly, Seiya was the son of the man who married her mother! Is this meeting only a coincidence?! Included one-shots: Volume 2: Maid in Shounen Volume 3: 3-gatsu no Koi wa Sora wo Tobu