Tanabe Yuuichi

The main character in this story. Yuuichi thought that Misako was his only mother, but one day Misako confesses to him that she is his step mother. Yuuichi however views Misako as his actual "mother" and has no reason to dislike her.

One day, Tomokazu accidentally learns of the existence of "mama club" and Chie blackmails him to join, and ends up participating in "club activities" with an unspecified number of "mamas.

This caused unrest in his mind regarding vague "feelings" in Yuuichi's, and his love for his step mother Misako transformed into something else...