Responses

I think Lucaon is having a crisis about his feelings toward Kyon, and thus avoids him. Kyon on the other hand feels lonely and might consider quitting if he thinks that Lucaon no longer cares about his existence. So Kyon might say something like "I'm thinking of leaving" and confused and panicked Lucaon will stop him.
ε=ε=(ノ≧∇≦)ノ At least I hope so!
"I never told you to leave"
Lucaon puts his hand on his face and hides his "zero-side". Was it on purpose? To show his that these are his true humane feelings? If so, SO SMART