He could have chosen literally ANYTHING other than what he said. Could have said that he hates fighting, that they were being fucking annoying, or just go off the deep end and say that he simply enjoys kicking people's ass. Or he could have said absolutely nothing, beat his fucking ass, and leave. His social standing in the school doesn't matter, considering that he is only attending the school to get the 500 million won, so his response doesn't have to be reasonable. He can just play as a character for 2 years, so he can do whatever the fuck he wants. Anything would have been better than saying "I like her UWU." With any of the other scenarios, if she eventually found out that he is her bodyguard, she'd think of you as some kind of dumb ass, rather than a manipulative bastard. Honestly this is pretty gross behaviour. The fact that this was his first thought is just shameful.