Pls, don't pretend we are only here to read pure shounen-ai love and romance. :D :D :D
Just saying, hentai/porn BL is also BL.
Continuation: https://www.mangago.me/home/mangalist/3054314/
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DLsite -- a legal site where you can purchase mainly smutty and hentai type of BL legally. -- https://www.dlsite.com/bl/
Irodori Sakura -- a legal site where you can purchase mainly smutty and hentai type of BL legally.
https://sakura-r18.irodoricomics.com/index.php?route=product%2Fcatalog
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/