People here aren't short-sighted, it's you, because you fail to understand further than what's simply shown to you, people think that the guy is an asshole and they're right.
Hanwool doesn't understand humans at all and decides that all humans are selfish based on a group of people when Naroo's lover died to save him, was that selfish of him? Through this experience he saw different sides of humans - love, sacrifice and selflessness but he still deemed that all humans are selfish, it's not idiocy or being oblivious but it's his fixed perception of humans being selfish that refuses to budge even when he sees that humans are more than that.
It's clear that Yunho is a good guy deep down as the people around him love him and with his personality he won't do anything terrible to Naroo. It's been made clear to Hanwool that Yunhoo is more complex than he seems with Kyun telling him about his past and his bandmate telling him about Yunho yet he never took the initiative to understand Yunho's past, feelings and motive for getting close to them, if he did then he wouldn't associate him to the people that hunted down Naroo. He doesn't know anything so he doesn't have the right to confront and judge him with his superficial knowledge on him.
In conclusion Hanwool is narrow-minded and needs to break out of his "I hate humans" mindset otherwise he'll never truly understand them or make an effort to but if in your eyes it appears otherwise then you're just as short-sighted as Hanwool which is a disappointment as you should understand the whole story as your a reader...
Hanwool has not been shown different yet so why would his opinion change? Yun's reasons still weren't good. Because of his tragic loss people tend to forget why he was trying to be Naroo's friend. Hanol figured it out especially after what he yelled at him. My point is if you are going to fault Hanwol and hold him to a higher standard than Yunho must as well. Otherwise it is just hypocritical. I am pretty open minded and see the bigger picture. It is why I don't call Hanwol an "asshole", which isn't true. Otherwise, he wouldn't care, get upset or save your faves aka selfish humans.
Can you not read? I clearly wrote that Hanwool has been shown different sides of people through Naroo's lover sacrificing himself to protect Naroo, yet he still believes that all humans are selfish which makes him an asshole. For Yun, I don't want to judge him as he hasn't done anything bad to Naroo, although his motive for getting close to Naroo is not pure it's understandable through his perspective. Since nothing has happened, I won't judge Yun as a bad person because his reaction is what a normal person would be like. In this world there is always a motive behind someone's action and there is no such thing as completely good person e.g. People who become surgeons only for the money, people who act polite to give others a good impression of themselves or giving fake praises because you don't want to bring unnecessary drama to yourself, does this make you an asshole? Everyone is hypocritical or selfish in some way - Naroo relying on Kyun to give him yang energy, Hanwool saving Yunho because of Naroo. Because everyone is selfish to some extent; to which point would you someone a bad person, for me it would ultimately be the result of their actions.
Btw I already gave my reason for calling Hanwool which you clearly didn't read in my first comment and Hanwool believes that Yunho is not a normal person because of his smell so no he didn't save any 'selfish' humans.
*sigh* You said Hanwool hasn't been shown different sides of humans other than selfishness when I explicitly explained in my first comment that he has, it's not my fault that you appear as you can't read, I'm not being rude just stating facts. Yeah I know Yunho isn't a saint (no one is) but he has his reasons and Hanwool who's an outsider and doesn't know shit should stay out of it until he has the full grasp of the situation.
I wasn't expecting anything different from most comments here. People sure are short sighted. Did everyone forget the real reason why Yun became Naroo's friend? I'll give you a refresher, in order to get him out of the way. Hanwol simply caught on to what his real intentions are. Humans have betrayed them in the past. What do you all expect to happen? Hanwol believes he is out to hurt his friend to get to Kyun. Makes sense. Tbh, Hanwol is aggravated due to his own feelings for Yun even though Yun wants Kyun. Wait for development because both of them need development. Yun isn't a saint. He got close to Naroo for selfish reasons... ╮( ̄▽ ̄)╭