Love Letter for My Love Then and Now — Irodori Comics
Issue: #1
Kazuya Kawaguchi has always had a crush on Miki Toda since elementary school, but every time he tries to give her a love letter to confess his feelings, he ends up turning away in fear. Several years later, the two meet at an alumni homecoming. Much to his dismay, Kazuya discovers that Miki doesn't remember who he is, and so puts up an act to hide the fact that the revelation has affected him so....
Creators: Yuki Sato