I can read these mangas many times! I rate them >9.5/10 based on my own preferences, so there will be lots of non-mainstream BL
Genres: NO PWP, no doujinshi
Length: <100 chapters or 3 vols
Search by tags: http://www.mangago.me/home/people/12706/manga/1/
If you like this list, please click "RECOMMEND". Thank you XD
2nd list: http://www.mangago.me/home/mangalist/655038/
(IF 1ST LIST IS FULL, I'LL MOVE OLDER ONES TO MY 2ND LIST)
Long series: http://www.mangago.me/home/mangalist/645867/
୧••୨ ========== Feel Free To Suggest Anything==========୧••୨
List here includes the following-
mafia/yakuza/gang-war stories , policemen stories
some twisted stuffs
killing ,blood-wars
hardcore smut
For detective/soldiers/killer plots
http://www.mangago.me/home/mangalist/299439/
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if U LIKE THE LIST THE PRESS THE BLUE RECOMMENDATION BUTTON
Isekai BL
Reincarnation, Transmigration
Reincarnated in Another World
Reincarnated in a Game World
Reincarnated in a Book World
Transported to Another World
Reincarnated Lover
Multiple Reincarnation
Reincarnated in the Past
Time Travel
Time Rewind
Part 2:https://www.mangago.me/home/mangalist/3123306/