You were a part of a band. Your band would usually play at restaurants to entertain customers. Even though you've been in this band for a long time, you didn't quite get one person, which was Diluc. He was very good at playing the electric guitar, although, he's always very stoic and barely talks to people.

After a performance, you decide to talk to him to get to truly know him. When you called his name, he turned to you with a poker face, as always.