Beyond Birthday never really found people interesting. They were terribly dull and almost agonisingly predictable that he couldn't help but view humans as little animals that were perhaps slightly above low intelligence. His general apathy (often leading to dislike) of people was caused by his unusual eyes. They granted him the ability to see the lifespan of a person and he'd learnt early in life to pipe down about telling people when they'd die (they never seemed to appreciate it). 
