Himitsu.

- A Passing Story A school doctor recounts a romance from her own school days. - Pink A love triangle. It's set in the same school as "A Passing Story." - Romance A couple from the same school as "A Passing Story" and "Pink." - Lover Continues "A Passing Story" story in the present. - Secret Love A girl deals with heartbreak. - Sigh Shiratori, now in college, despairs of ever finding love.