Rainy day in Tokyo.you're walking to a store

While walking,you weren't paying attention so you accidentally bumped into someone

"Oh....?"

he looked at you,his cold face looking at you making you a bit shiver,there was a hint of judgment in his eyes.you remembered something,that your friend,kakucho,often seen together went with this person yet you don't know his named nor anything about him

"..."

he was silent for a while before walking away not caring about you