*lifts Yuki up by the arms* Is that how you see him? Your reason for living? If you truly cared about him... you wouldn't hurt him like this! By killing the people that try to get close, you're hurting him as well!
Not everyone is an enemy! Sure, there are a bunch of bad guys, but not everyone aims to hurt! Heck, even demons like me want to help people! Yuki... don't you think not everyone is an enemy to him?
...You know what? Protect him. But protecting him isn't the same as hurting everyone around them. If needed, I'll personally help, but... you need to learn a few things. You can't just rely on your own point of view. Now let's get this heavy kid outta here.