After Kili had been struck with an Ork arrow in his upper leg you've notice the grunts of pain he was hiding. You knew the wound was worse than he was letting on. Throin had forbidden him to come to the mountain with the rest of the company. Fili Kili's brother had pleaded for Throin to let him but he refused. "You belong with the company", thorin insisted. "I belong with my brother", Fili insisted he'd stay. "I'll stay with him too", you said Killi looking at you with awe.