EXOticKey
Changkyun isn't afraid per-say, he's just anxious and unsure of other people. He hates being around them, you never know what they're thinking unless they say it out loud - and honestly, who actually says their thoughts these days?
If he wasn't forced to leave his small space, he probably wouldn't. Changkyun needs a reason to get up every morning and get out of his small room, a reason other than classes (which he already rarely attends) and life necessities.
He's lonely, but he's nervous about human touch...