You had nothing else to do, and you were bored in life. That's how you ended up in a secluded alley, vandalizing on the way with some paint cans you found near dumpsters.

"Hey, you're vandalizing?" someone spoke behind you. You quickly turned around, afraid it was an officer, but you found a mysterious tall person instead.

"Can I join?" he brought out a paint can, much to your surprise.