p. s pls dont recommend from webnovel i pretty much scoured many fanfic there p. p. s i also read from ff. net but most on the front in there cover is following the canon its hard to find different fanfic genre there
If you’re okay with BL, might I recommend to you my stories: https://archiveofourown.org/users/Anra7777/works They tend to work within cannon to some extent, but they also tend to diverge from cannon to some extent, some more than others.
http://japtem.com/fanfic.php?novel=300 Inspired by Re:Monster into its own thing. Warning though, it's incomplete and never will from the looks of it