Mugen and Rei made it to the class just in time. They literally only had seconds before the class would start and they would've gotten in trouble. Fortunately for them, Mugen regained his strength surprisingly fast.

“Alright! Listen up!" The instructor began. "This is a larger room so I don’t want any talking while I’m speaking. Welcome to the Shunpo Class, also know as the Flash Step.”

Mugen looked at Rei confusingly. "It's basically a really long jump." She said whispering.

"Oi! I said no talking, please!" The teacher yelled out. Rei bowed and apologized.

After the teacher showed the class what to do, she let them loose. Mugen looked around and recognized many faces he knew from when he was alive. He and Rei went in an open part of the room to practice. Rei wanted to go first. Since it involved spirit energy, whe was quite eager to try it. She had become a master in the short time she had been in Soul Society.

"Ok... 'Focus your spirit energy at your feet.'" She was repeating what the instructor had told them to do to herself. Mugen stood aside, watching Rei mumble to herself. It was at least five minutes until she performed the Flash Step. When she did do it, Mugen had only blinked and she was gone. Rei reapeared just six feet ahead of him, even that length at this level was amazing. The teacher came by and told her to do it again. Rei repeated the steps but in just a fifth of the first time. This time, her Step was about a foot shorter than her first.

"Very good." The teacher told her. "Now Mr...?"

"My name is Mugen Tsukiakari." He finished.

"Mr. Tsukiakari, it's your turn now."

Mugen seemed nervous. Rei came by and smiled at him, an assuring smile. "Alright... I try-"

"- Not try. Do." The teacher interupted him.

Mugen planted his feet squarely on the floor. I hope I don't blow up like in Kidou Class. He thought. He focused his spirit energy at his feet. There was a small wave that eminated from them as his spirit energy pushed away some dust. A moment later, he grunted and disappeared from Rei's sight. He appeared only 1.2 meters out. Almost half of what Rei made. When he landed, he almost lost his balance and stumbled a bit.

"Again!" The instructor yelled. Mugen looked back at her, she nodded and he tried it again. Like Rei, he lost a foot, but he stumbled forward, barely catching himself. "That was... adequate. Good job both of you. Now try it again." She congradulated Mugen and Rei. She left to go deal with the others. They listened to her and tried the Step over and over again. Mugen noticed that he was getting shorter each and every time, even if it was only by an inch.