Bl or straight romance

try 'Kaleidoscope of death'
- it has some horror genre in it but that's what makes it so good, I loooove it

Here's some of my personal faves! I assure you they are good hidden gems. Very detailed + awesome world building and surely gets your mind pictures going. (I didn't include the popular ones anymore like MDZS and HOB)

https://www.novelupdates.com/series/the-legendary-masters-wife/

https://www.novelupdates.com/series/surprise-the-supposed-talent-show-was-actually/

https://www.novelupdates.com/series/the-reader-and-protagonist-definitely-have-to-be-in-true-love/

https://www.novelupdates.com/series/thrive-in-catastrophe/

https://www.novelupdates.com/series/kill-the-lights/

https://www.novelupdates.com/series/ghosts-know-what-i-experienced/

https://www.novelupdates.com/series/seizing-dreams/

https://www.novelupdates.com/series/spirit-hotel/

http://www.mangago.zone/read-manga/trash_of_the_count_s_family/
the novel has 600+ chapters and is really good!!