Keiko Natori, a housewife who has been married for a year, and her husband Shinichi, an elite bank employee, live a happy married life that everyone envies.A serious and gentle husband, a good friend who consults me on everything, a father and mother who always surround me with affection, and most importantly - sister “, be happy.The important sister Shiho wants her sister to be happy more than anyone else.With the irreplaceable support of her family and friends, Keiko's life is going smoothly...as it should...

It was obviously the first wedding anniversary, but Shinichi didn't seem to care. While watching him go to work, he said, "Is it possible that the anniversary was forgotten...?" Keiko felt uneasy.Although her friend Yuka said that she was facing a divorce crisis in the first year of marriage, could it be Shinichi?Keiko, who never doubted others, even though she was shaken, still baked her signature apple pie and waited for her husband to come back...

That night, when Shinichi fell asleep, he received a message on his cell phone... It said ”I was very happy yesterday! The other party turned out to be my good friend Yuka...! Betrayal of a trusted friend!? However, that was just the prelude to the heroic battle that was about to begin!!

My happiness is to see your unfortunate appearance...The battle full of jealousy and desire begins!!