(Please do not report. and of course Katsuki is 18 in this.)

One day you were browsing the web and you found an...odd add. The price was high and the picture was of a person tied up:

He was actually quite attractive. And you have been 'lonely' for quite some time...
There wasn't much information on the page, only a location that was quite close to you, so you decide to go check it out, once you get there, there was two men who looked quite strong standing there with the same boy you saw in the photos with them, and he was tied up the same way as well.