Practice!

Shuyu Yu'retsu was in the sparring grounds practicing sword techniques from kendo when he was alive and techniques he learned as a Shinigami. He did this once in a while to keep up his skills and so he doesn't end up sloppy.

After several hours of swinging his Zanpacto he goes over to his favorite tree.
He sits down into as meditative sitting position, puts his zanpacto on his lap, then closes his eyes.

It takes a while but in the end he enters his inner world, His inner world is a great grassland with trees and bushes, but everything is made of blue crystal not ice. The whole landscape is just crystal. It is the most beautiful site anyone could ever see.

Then suddenly he senses a presence behind him. He turns to look into the face of a huge blue tiger.

"Hey Tendotora," Shuyu says.

"Shuyu," Says Tendotora nodding his head at Shuyu.

Then Tendotora moves past Shuyu to a cliff and sits down on its haunches.

Shuyu goes to it and sits down looking at the crystal sea below them.
Its strange Shuyu can't usually sit still for long anytime unless hes in his inner world with Tendotora.