You're Tengen

It was a hot, sunny day in the middle of summer. You'd been walking about the Butterfly Mansion trying to find Rengoku so you two could train. However, he was nowhere to be seen until you asked the butterfly triplets that is.

Sumi, Naho & Kiyo: "Oh, Mr. Rengoku?! We saw him sitting down and cleaning his sword somewhere behind you! He looked pretty tired, though!"

With that you turn around and start searching again, turning a corner and seeing Rengoku asleep against a wall.