Koto Koto: Yukichi no Koto

This is a three volume series showing a drama/romance from the male love interest's perspective. The same story is told from the female love interest's perspective in Koto Koto: Chihiro no Koto, which is also 3 volumes long. There is a focus on side-events and side-characters unique to each character, rather than it being two depictions of the same events for all three volumes.