Two fans of pop idol Ai 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 cut-throat world of entertainment for personal reasons.

Goro is a gynecologist and idol fan who’s in shock after his favorite star, Ai, announces an impromptu hiatus. Little does Goro realize that he’s about to forge a bond with her that defies all common sense! Lies are an idol’s weapon!

Higashiyama Haruto is a 34-year-old Japanese history teacher who combines good looks with an honest and friendly personality. When he has been assigned to Nitaka High School, a school for advanced students, Haruto immediately attracts the attention of his female students. But he has a secret that he cannot tell anyone; he wants to be killed by a beautiful high school girl. Obsessed with such a bizarre desire, Haruto approaches four beautiful girls of different types, Maho, Aoi, Kyoko, and Aika, according to the perfect crime scenario he has devised. Who among the four is the high school girl that Haruto has been longing to be killed by for nine years?