It's in the first episode too:
http://www.mangago.zone/read-manga/aplicaci_n_humillante/
check mangas tagged with Physical Humiliation
BDSM
http://www.mangago.zone/home/mangalist/603799/
list is a collection of
• dom seme x sub uke
• dom uke x sub seme
I highly recommend this!! Its the healthiest bdsm ive read so far
http://www.mangago.zone/read-manga/aporia/
Follow the list to be updated. And if you liked the mangas/manhwas I included, please do recommend. Enjoy~ (人 •ᴗ•)
Shame application
And the special episodes in bj Alex (chanwoo x MD)
chanwoo X md chapters in bj alex and junai dropout
in need of toy torture yaoi, like- they’re in public with a vibrator or something-