Hwan ain't sus, I think he just wasn't prepared for how good the sex was gonna be lol. I think it's also that he was probably just as obsessed with Chiwoo as Chiwoo was obsessed with Hwan and that's why his eyes look a little manic. That or he has a slight sadistic/possessive streak which is even hotter.
Actually now that I think about it, it probably leans more towards that slight sadistic tendency, I'm remembering in ch. 29 when Hwan gave Chiwoo a bit of that overstimulation (best kink ever btw) treatment after he just came...
Hwan ain't sus, I think he just wasn't prepared for how good the sex was gonna be lol. I think it's also that he was probably just as obsessed with Chiwoo as Chiwoo was obsessed with Hwan and that's why his eyes look a little manic. That or he has a slight sadistic/possessive streak which is even hotter.