DKTM-020 Two mothers! ! My mother and stepmother are in such a state of chaos that I'm in trouble! !

A story about a certain boy. A few years ago, my mother and father divorced because of my father's affair. Then I got a new mother. Is it what is commonly called a mother-in-law? So I have two mothers. My mother, Izumi Terasaki, who gave birth to me and raised me this far. Her stepmother, Kaori Otonashi, treats her kindly even though they are not related by blood. As for my father, Tatsuo