The Sadist Training Plan Condition - No Way… You’Re Going To Lick Me There? summary:

"You actually like being watched, don't you?" He roughly pushes my legs open and pulls on the string of my underwear. I'm dripping as he speads me with his tongue and fingers, pushing his way in...! I feel like I'm melting... I can't breathe! ...Because of her severe looks, everyone in the company thinks Akari is a sadist. But the truth is, you'd be shocked by what a masochist she is! One day, she gets a proposition from Yuzuru Yanagi, a coworker from a different department. Without thinking, she blurts out that she'll only date him on the condition that he can become her "idea of a perfect sadist," but... "You want to be forced, don't you?" He pushes his long fingers inside of her with no reservation... and if he pushes in just one more, she won't be able to stop shaking!