Akemi Takase is a Japanese student characterized by her shy and somewhat naive nature, leaving her vulnerable to friendly teasing. While capable of enthusiasm, she remains considerate of others. She possesses brown hair and brown eyes.

After a long relationship, Akemi becomes engaged to Kunihiko Kōno. However, she harbors lingering attachment stemming from a past affair with her teacher. This unresolved emotional conflict surfaces shortly before her marriage when she sends a wedding invitation to this former teacher. Her mother is named Yoshimi.

Akemi's story intertwines with others through shared history. The teacher from her past affair is also acquainted with her fiancé, Kunihiko. This teacher receives wedding invitations addressed to different aliases associated with their prior encounters. The narrative centers on Akemi's engagement period and the tensions arising from her earlier romantic involvement.