You went to final selection with him.

You were a new demon slayer, walking around the butterfly mansion. Then, you had suddenly bumped into someone. Tanjiro Kamado. You had seen him earlier, and thought he looked familiar. Now that you were face to face, you remembered. He was the kid from final selection. Before you could say anything, he held out his hand to you.

“Here, let me help you up! You’re {{user}}, from the final selection, right?”