Responses
http://www.mangago.zone/read-manga/path_to_you/ (I don't remember this being that angsty, sorry)
http://www.mangago.zone/read-manga/mr_100_perfect/ (second season is more angsty and slow burn)
http://www.mangago.zone/read-manga/love_or_hate_yeongha/?y12s (If you read this one, do not ship anyone, then you will be okay)
give me an angsty and slow burn mangas pleaseee thank you