Kimiha Hikari

Aya, a kindergarten teacher, and her husband have chosen not to have children, but they can no longer ignore the desire to have children. One day during an open day, a child visiting the kindergarten scratches Aya's car. As the child's mother desperately apologizes, Aya looks closely and realizes that it is Kayo, a close friend from high school...

(Source: Our Feel, translated)