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"Interesting plot but not twisted enough"
It's my prediction too, but the plot is too predictable. This is BL webtoon, they usually give the most sick twist ever.
Did you remember 'the baker on the first floor' or 'Killing Stalking'? Did you remember that?? Did you???
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The Baker on the First Floor is "twisted"? There must be another webtoon called "The Baker on the First Floor" out there to read because the published through Lezhin isn't "twisted enough". Why generalize all webtoons that are BL based on two "twisted" webtoons? Go read a couple hundred more from a variety of publishers before making that generalization, you'll find that they do not "usually give the most sick twist ever."
After all that I've read, I've concluded that maybe the captor was his highschool classmate he had raped in a warehouse and he's now back to make him remember and pay him back for what he did.