The mother I like remarried. (Shoda Chisato, HIMA-97)

Kosuke, the son, is suddenly informed by his mother, Chisato Shoda, that he is to remarry. Raised by his mother, Kosuke, after meeting and talking with his new bride, Maruyama, experiences a profound sense of loss at having his mother taken away, coupled with anxieties about the future, leading him to make a decision...