The mind is family, but the body is delicate relationships between others. A week alone with my stepmother, who can't make a mistake

Aya married her older husband. Her husband remarried and ended up living with his stepchild Tatsuya, and the family of three ends up building a new family. Ayaha thought that she was closer to her husband and had a gentle parent-child relationship like a friend. Despite this, Tatsuya loved Ayaha as a woman rather than a stepmother. Without realizing the different emotions, they end up spending a week alone...