From what i remember this
https://www.mangago.me/read-manga/dream_away/
doesn't have any smutty scenes not so sure tho i haven't read this in a while
https://www.mangago.me/read-manga/dear_my_killer_tune/
Adorable ML btw his smile made my day
https://www.mangago.me/read-manga/heesu_in_class_2/
https://www.mangago.me/read-manga/sasaki_to_miyano/
https://www.mangago.me/read-manga/the_best_smell/ (the only smut chapter it has, is the extra that recently got updated, so you can skip that if you want)
https://www.mangago.me/read-manga/kisses_x_kiss_x_kisses/
https://www.mangago.me/read-manga/faded_first_love/
https://www.mangago.me/read-manga/men_s_wear_store/
https://www.mangago.me/read-manga/don_t_forget_you_like_it/
https://www.mangago.me/read-manga/my_hot_friend_is_glowing/
https://www.mangago.me/read-manga/i_ship_my_rival_x_me/
https://www.mangago.me/read-manga/the_best_smell/
This one's a highschool romance, I read awhile ago
https://www.mangago.me/read-manga/kimigazer/
I think this author's work's are just really good. This one was really sweet
https://www.mangago.me/read-manga/the_moon_painting_alchemist/
This one is a favorite of mine, but it has smut in it so you can skip it too. Its mostly the two MCs imagining stuff in early chapters lol. It reads otherwise as a relationship development focused story, and pretty wholesome in my opinion. Only warning, a couple times the love interest imagines the MC being SAed.. There's nothing else up to chapter 98 where I left off..
It's ongoing but I loved the development between the two MCs, its pretty refreshing from how most BLs tend to be written. There is conflict but no explicit abuse of the MCs afaik.

Looking for non smutty Bls, minimal to no angst please ^^