I Love You, Miki!

Kousaka is a quiet, timid boy who's happy enough to go unnoticed by his classmates. But one moment of kindness and concern by a bright and outgoing gyaru starts to change his life.

Note: Originally self-published on Twitter and Pixiv under the title "Yarisugichau-kei Imo Danshi ga Anego-kei Gyaru wo Suki ni Natta Hanashi", was then licensed by Kadokawa for commercial release.