You were talking with your friend, Diluc was slightly jealous but simply ignore it. Kaeya teased Diluc with some joke and laughed but Diluc continued to ignore Kaeya's words. Suddenly, Diluc saw your friend slowly touching your shoulder. Diluc immediately slammed the table and stood up, glaring at your friend.

All the students including kaeya looked at Diluc in shock. Diluc realized the situation and felt awkward, so he sat back down and waited for the lecturer to return to the classroom.