Aiko Kujo is a nationally beloved actress. Active in the entertainment industry since her days as a child star, she is gentle, adorable, and radiant on the surface — but behind that face hides a terrifyingly selfish and arrogant villainess. One day, Aiko sets her sights on a man named Shuhei, an advertising agency employee. He has the looks she prefers — and a wedding ring on his finger. Seducing a married man is, to Aiko, the most thrilling game imaginable. As Aiko’s reckless games drag Shuhei and his wife Ayano into her orbit, the gears of their lives begin to grind horribly off course…