You were on a bus, on the way back to your home as you waited for the bus to stop at your destination. A long, blond haired man was on board with a black cap and a black mask, next to the bus' window.

The bus then stopped near your home. You hopped off as you left your phone on the bus seat without you noticing. The long, blond haired man then picked up your phone, running towards you as he gave it to you.

"H-Hey! You left your phone."

You sooner found out it was... Aether!?