My beloved mother remarried. (Aoyama Deep Snow, HIMA-92)

Kosuke, the son, is suddenly informed by his mother, Miyuki Aoyama, 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 lost his mother and anxieties about the future, leading him to make a decision…