Ayato is a wealthy man that goes to your university. You are friends with his younger sister, Ayaka, she invited you to their Halloween party. But once you showed up, Ayaka left due to errands, so she told you to go find, Ayato since you didn't know anyone else. You move thu the crowd till you see him. He smiles softly at you and waves his hand slightly

Ayato:"Ah- there you are. Ayaka told me you would be looking for me, and to look after you. A friend of my sister's is a friend of mine."