I Was Supposed to Never Fall in Love With You.

Iijima Yasutaka, a dull and ordinary high school boy from Chiba Prefecture, is out walking during the night of a study camp, when he helps out his classmate Ema Kitaoka who had gotten into trouble. After that, Ema starts talking to Yasutaka, but only outside of school. At first, Yasutaka is perplex, because he doesn't even like Ema very much—. An improbable coming-of-age love story between two opposites! (Source: Takarajimasha, translated)