I am glad u asked :) I’ve got a list but I want to tell u beforehand that most of the bls are non-consensual s** bcs I rather read them 
ANYWAY!
straight:
In the doghouse
The Hound of the Baskervilles
S flower
Sadistic beauty
YAOI:
Save me, will you? (It only has 4 chapters)
No returns after use
revenge
You can’t come, sir!
Mad dog side story (I’d recommend u to read the main story first,though the main story has no sm** in it but it’s up to you)
The tosas master
Sadistic madness
Sadistic beauty side story bl (my first bl manhwa and it’s non-consensual)
The Color of the Night (I dropped it because the bottom kind of annoyed me although the s** scenes were sadistic good represented but there was too much s** that the plot got completely lost, it’s up to u :))
Perfect body
Color recipe (ITS MY FAVOURITE MANGA! It contains r^ape tho, I don’t know if I could call it sadistic but there was a s** scene that kind of was in the chap where the mc got captured in mls home and kept there chained )
Non zero sum (hardcore r^ape, I think three tops against 1 bottom and the tops are crazy sadists esp the "ML")
Yuwon everlasting
Sin flower
Oh and I want to recommend u my fav manhwas that arent sadistic nor masochistic
“Freeze , it will stand if u move “ and “ don’t get me wrong, boss” they’re totally fun to read and I’ve re-read them multiple times
YURI:
Sadistic beauty side story gl (it's sweet)
( I'll keep editing if I find more bls)
