Mika was living a happy life surrounded by her serious husband and obedient son, Ryo. One day, my son's friend Makoto comes to my house. When I changed into my absent son and casually exchanged conversations and smiled, the truth changed completely and suddenly attacked Mika. Mika, who has no memory of her mother and says, "I'm lonely," is truly heartbroken. After that day, the happiness that Mika had desperately protected crumbles away.
