Two pop idol Ai fans are reincarnated as her "secret" baby twins, Aqua and Ruby, and grow up supporting her until the tragic day she is stabbed by a stalker. Flash forward a few years later and Aqua and Ruby are high school students determined to make it on their own in the cutthroat world of entertainment for personal reasons.
Set in Kyoto, Japan, a love story takes place between Hajime and Reika. Hajime is a handsome young man, who is usually a second quicker than everyone else and straightforward. He works at the post office. Reika is a young woman, who is usually a step slower than everyone else. After Valentine's Day, Hajime wakes up and is unable to remember what happened that day.