Our heroine is girl named Hina-chan. She is in her 20s. Hina has a handsome boyfriend now, but she will always remember her first love, a boy named Itsuki. When other kids would tease Hina, calling her ugly, Itsuki would defend her, and try to cheer her up and make her feel better. He and some of his family eventually moved away, leaving Hina heartbroken. But the memory of her first love will always make Hina feel nostalgic and happy inside. Itsuki's grandmother still lives next door to Hina, so she still has a connection to him, somehow.