im not sure if this is your vibe but i recommend “phantom high”. its about a human high school teacher in hell teaching demons and spirits as his students. its a found family story and shows the background stories of characters. i cried when i read this ngl.
https://www.mangago.me/read-manga/phantom_high/
this are the shorter ones (12 chapter max)
https://www.mangago.me/read-manga/there_s_no_one/
https://www.mangago.me/read-manga/immediate_disadvantage/ (this one is very smutty tho)
https://www.mangago.me/read-manga/today_s_lucky_item_is_an_ahjusshi/
these are the longer ones
https://www.mangago.me/read-manga/kill_me_if_you_can/
https://www.mangago.me/read-manga/protect_your_purity/
omfg wait im sorry i didnt know if u want a bl rec or not u know what just ignore this
TYSMM I'M FINEE WITHH ANYTHINGGGG
READ NOT BLOSSOM ヾ(☆▽☆)
PLEASEEE recommend me a manga or manhwa that is finished and good, because I accidentally read a 90+ chapter manhwa that is not finished and I can't help waiting until it's finished......