@SUNOO I don't mean to justify pedophilia or anything but look you're not reading a normal world bl, its omegaverse. He didn't choose to get excited, it happened because he was an omega with his fated pair right infront of him. This whole manga was about his struggle to control his instincts. He himself knew it was wrong that's why he tried to control it even if it meant damaging his own body. It was his instincts.