love this author i rec their other works too!!
https://www.mangago.me/read-manga/hanakoi_tsurane/
To take an enemy's heart
Monochrome rumor
My four masters
Stop bothering me emperor
Mr.Dior
Also still short rn but try RAINBOW CITY it’s worth it
The novel for the manhwa ‘turning’ is a must read. I’m telling you. This shat has 600+ chapters and somehow I’ve reread it 3 times.
https://www.mangago.me/read-manga/the_time_a_gangster_was_reincarnated_as_ranmaru_mori/
This isn’t so long but you should definitely read it like trust trust.
https://www.mangago.me/read-manga/love_history_caused_by_willful_negligence/
Idk if this is considered a hidden gem but it was for me who discovered the novel first.
https://www.mangago.me/read-manga/the_edge_of_ambiguity/
Long hidden gems of BL, preferably long pleaseee