環と周 (Tamaki to Amane)

Plot

On her way home from work, Tamaki witnesses her daughter Akari kissing Norimoto, a girl in the same grade as her, in a vacant lot. Tamaki goes home and talks to her husband about it, but he seems to have his feelings about it. Her husband once fell in love with a boy in the same grade when he was in the third year of junior high school, just like Akari. This is a gem of an omnibus series depicting the various "forms of love" that exist between us.