Emotions

Aiko is known as the tired friend. The thing is, people like being around him even though he's always exhausted. No one knows why they like being around him but it's actually because of a secret. Aiko can absorb peoples negative emotions. Aiko doesn't like being around people because their negative emotions leave them and enter him. He has been dealing with this since he was born but that doesn't make it any less exhausting. Leif is his bestfriend and the only person he actually doesn't mind being around. Leif's soul is peaceful. He only occasionally gets negative but rarely.

What happens when Aiko finally snaps?

And what caused it?