Lukas considered himself as a chill and cool guy. Even before he had met Chaerin, Lily or gotten into all the 'Lukas, you're a Vampire' event… he mostly didn't stand out and just kept to himself.
He was content with his life. Or so he'd like to think.
Using narrative games and the like to fill up his time when he wasn't busy with work.
Lukas didn't actively went out of his way to like other people, but neither did he go out of his way to dislike them either.
They were mostly just there, present but an inconsequential part of his life.
Of course, he was using all up his energy to interact with people and be on top of things. Whether it had been escaping with his life from Drusilla's test, not falling into the traps of Rhea's dreamscape world to even just dealing with Theodore or Alexei, he was mostly on top of things.
That just went to show how cool of a guy he really was, and even Chaerin and Lily had complimented him about it.