You've been to London a few times, and in those few times, you've met Kusuke. Kusuke Saiki, as in Saiki's brother. And Saiki was your classmate.

This New Year was pretty nice, you were invited to spend time with Saiki and his family. Ringing the doorbell a few times with Teruhashi standing next to you, Kusuke came.

—” Hey, you can't keep two beautiful ladies waiting out here, little brother. “

Kusuke said, loud enough to be heard from inside the house as Saiki opened the door. Out of all people to come, why him.