>>52751656The game treats him like a kid, and it would be really weird for a 20something dude to hang out with a 10-12 year old (the MC). Also, he's kind of short compared to other adult NPCs.
Well in the end it's up to interpretation since we have no official age. I've heard some people say they think he's 14 (which is a bit ridiculous, considering he has sideburns all the way down to his jawline) but I think ~18 is a good middle at least.