https://www.mangago.zone/read-manga/kijima_kun/
https://www.mangago.zone/read-manga/eyes_speak_more_love_than_the_mouth/
https://www.mangago.zone/read-manga/kowamote_danshi_no_bentou_ga_umai_riyuu/
https://www.mangago.zone/read-manga/terano_kun_to_kumazaki_kun/
https://www.mangago.zone/read-manga/hana_tokidoki_kuma/
https://www.mangago.zone/read-manga/outsider_communication/
I don't really know any Manga/hwa with this kind of character but if you read Danmei, then I would love to recommend you this one I'm currently reading called "Ghosts know what I've experienced". the ML is exactly the same as you described.
https://www.novelupdates.com/series/ghosts-know-what-i-experienced/
bl knowers, I have the strong need to read that cute fluff plot where one looks scary and is avoided by everyone but is actually a very cute and kind person. give them to me, all of them... pleek