At school, Hori Kyouko is known for being smart, attractive, and popular. On the other hand, her classmate, the boring, gloomy Miyamura Izumi tends to get painted as a "loser fanboy." But when a liberally pierced and tattooed (not to mention downright gorgeous) Miyamura appears unexpectedly on the doorstep of secretly plain-Jane homebody Hori, these two similarly dissimilar teenagers discover that there are multiple sides to every story...and person!

Source: Yen Press

AniDB | ANN | MAL | TVDB | Wiki (en)

Alternative version: Hori-san to Miyamura-kun
Side story: Horimiya: Piece