And after read 20 Chapter on RAW I still wondering ehy that man doing that and this 😂

Based on what i saw,
The kidnapper was a former classmate of his. The 2 were close and i think the kidnapper had feelings for mc. And maybe mc also liked the kidnapper? Maybe. Since they spend their free time in the sports equipment room (hence why kidnapper recreated the warehouse to look like the equipment room) but maybe the mc brushed those feelings aside? I dunno. ╮(￣▽￣)╭

oooo i agree!! personally i think the mc liked the kidnapper back and they actually had sex a few times, which would be why the kidnapper expects the mc to remember him by raping him.

Based on a few flashback, I think mc was the one fooling around first, touchy, and kissed the kidnapper. Maybe when the kidnapper falls in love, mc just backed out and broke them up.