[Hunter Fan] Not a 'Typical' Big Cat

The master once said that I was born with a "thousand-faced man" because I have no self. I can be a fool, I can be a madman, I can also be a monster. I was thrown into another world to survive because of my "heinous crime". I didn't expect that the special ability I drew would be so deceiving... Well, the judge said that people with an "optimistic" personality are more likely to survive, so maybe... I still have a chance? "Hey, Hiro, are you... Really attracted to your elder brother?" At this point, the silver-haired boy looked as awkward as if he had eaten a fly. "Hmm, young Master Killua, why do you think so?" I looked at him with a smile. "Idiot! Don't speak in Hisoka's tone!" The silver-haired boy who was teased violently rubbed the row of goosebumps on his arms with disgust. "I'm sorry, Master Killua, I just can't completely break away from the role for the moment." I don't want to talk about this topic, I know best what can be used to divert Killua's attention. "Ahhh! What weird mission has Big Brother arranged for you?!" The silver-haired boy, who couldn't bear it anymore, finally ran away with his head in his hands with a tangled cat face. "Ah, I seem to have overplayed it." I stuck out my tongue and brightened it up. I straightened my skirt, turned around and walked slowly towards the inner house. CP one on one, HE. The male protagonist is Illumi, and the female protagonist is Hiro after time travel. The entire writing style is as relaxed as possible, with some dark elements interspersed. The original characters will avoid OOC to the greatest extent, and give you a real big cat. Just sauce. Conception: