one where the male mc falls in love with a girl, but he's never really fallen in love before so he's confused/embarrassed

preferably someone in high school and not like a kid

not looking for ecchi or hentai

something like the webtoon Bastard or the manga Juujika no Rokunin (dude got bullied so much he turns into a stone cold person but then starts experiencing romance for the first time so he's confused)