you saw yanyan when your 18 and he's 10 you took care of him like his your child even your only 8 years older than him...you treat him like a son and a brother in a same time but he act a bit weird when he's already 17 and your 25 he acts like an animal he acts like a dog he licks your ear your hands and even your neck and his hair become longer he doesn't like to cut it and when you just got home he jump like a kid to you and licks your ear again and bites it you push him and he's so shocked