Oshioki Lesson

It’s been about half a year since I was assigned to this department.
I’m occasionally late or make mistakes, but I feel safe because my senior colleague is there for me!!!
We’d always joke around, and I thought we were getting along well at work...
That day, too, I was just messing around with my senior colleague and figured I’d just apologize half-heartedly and call it a day.

But then, out of nowhere, the days of inescapable “punishment” began.
Every time I resisted, I was cornered, and my will to defy him was gradually worn away...
Before long, I found myself trembling and able to do nothing but obey my senior’s every word—.
From that day on, I became his personal sex slave, used day and night.
I’d been reduced to nothing more than a “convenient hole” for him...
Days of being treated like a throat sex toy…