Datte Mou Kekkon Shiterukara!
だってもう結婚してるから!
After five years of marriage, the couple's relationship has grown distant, with little communication between them. Upon overhearing her husband in a questionable conversation with a student, the wife decides to disguise herself as a student and infiltrate the school where he works. However, she is discovered by an attractive male student at the school, potentially marking the beginning of a new chapter in her life.