Slut just refers to a promiscuous person , it doesn't mean they enjoy rape or having non consensual sex wldnt mean rape just bc they sleep arnd. Its just a term to degrade mostly women for being promiscuous but there still is consent.
I would rather say mc has a rape or degrading kink thts the reason they brushed it off the table so easily ,but seeing how its a yaoi nd how few times these topics r discussed seriously in manhwas i cld be wrong

Everyone here sucks and i don't understand why the author put rape in the first fucking chapter only for it to never be addressed.