4 months later
It was morning in the southern water tribe. Korra was at her training Arena waiting for Tenzin to arrive. He had learned that Korra was feeling better and decided to see how well her bending was. Rex and Katara had joined her at the arena to see how her powers were doing and how she was doing as well.
"So when is Tenzin going to arrive" said Rex.
"He should be here shortly. I can't wait to show them how much stronger I've become since the last time we met" said Korra with excitement in her voice.
Rex then saw something moving in the sunlight. He looked up and squinted at the sun light to see what it was. He saw what looked to be a giant bison in the sky and there was a man sitting on top of the creatures head.
"How is that thing flying without any wings" thought Rex.
"Is that Tenzin" said Rex.
"Yes it is" said Korra.
The bison landed next to the gates of the arena and the man jumped down for the bisons head. Korra ran over to him and hugged him saying "it's so good to see you."
"How have you been Korra" said Tenzin.
Rex got a better look at the man. He was wearing a yellow shirt, with what looked like a red jacket with yellow collars. And he saw an arrow on his forehead.
"I feel a lot better. And I have Katara to thank for it. Oh and this man as well" as she pointed at Rex.
"Is this the boy Rex you told about in your letters" said Tenzin.
"Yes he is and I suppose he's the main reason I've been able to get better."
"I see. Well thank you Rex", as he shook his hand, "I thank you for helping Korra through this. You have my gratitude" said Tenzin politely.
"Come on I want to show you how much better I've been getting" as she pulled Tenzin to the arena.
Tenzin, Katara, and Rex stood beside the arena while they saw Korra on one side of the arena and three professional firebenders on the other side. Korra then started throwing fire at them, to which they both deflected her attacks.
"Come on attack me. I can take it" Korra said with confidence.
All three fire benders looked at each other with concern then did as she said. They through fire at her to which she was able to deflect. She seem to be doing fine until she had another bad flashback. Then she blindly through fire around until one of the fire balls hit her causing her to fall down. Rex saw what happened and ran over to her. Tenzin followed shouting "all right the sparring match is over."
All three vendors did as he said and walked away. Rex helped Korra up and said
"Korra are you all right does anything hurt."
"I thought I was ready this time" she said as she took off her helmet.
"There is no shame in taking the time you need to recover. Being the avatar can wait" said Tenzin reassuring her.
"But what about the earth kingdom. I hear it's still a mess."
"This situation has been stabilizing since Kuvira took over. Don't worry about it correct. Take your time and recovering."
"He's right Korra. I know things have been tough for you now but if you still dedicate yourself to trying to get better and you well nothing is ever solved overnight things take time and this will as well" said Rex.
All Korra did was throw her helmet down and walked away. Tenzin tried to follow and talk to her but Rex intervened saying he'll go and talk to her. Rex followed Korra out towards the cliffs near the sea. He saw her bending her frustrations out so he decided to just let her be and decided to talk to her later.
It was night time. Rex Korra and her parents were sitting at the dinner table. Rex could see that Korra was still frustrated about not being able to fight again. Korra then spoke up saying "Mom, dad I have something to say."
"What is it" said Tonraq.
"I want to go back to Republic City."
"Are you sure" said Senna.
"I know I'm not 100% but I feel like I've hit a wall. I need to be where the action is. Where my friends are."
Tonraq and Senna looked at each other then back at Korra.
"I'll have the white lotus prepare a boat for you. Then they'll take you to Republic city."
"Maybe Rex could accompany you" said Senna. "Maybe a visit could jog his memory."
"No I want to go alone. The trip alone could help me concentrate some. I don't mean to be rude Rex but I feel like I need sometime to myself."
Rex sighed and said "Very well. While I think some company would be best for you, I'll respect your wishes".
"Thank you for understanding" as she hugged him.
Morning arose in the harbor of the village. A ship with sails embedded with the water tribe symbol stood at the end of the dock.
"Are you sure I can't come with you. I feel like you might want some company."
"I appreciate the thought Rex but going alone will help me focus some. You can come by when my parents go to Republic City as well."
Rex smiled and hugged his best friend goodbye. Korra's parents, Rex, and Naga saw as Korra set off towards Republic city. Naga howled as she saw her master sail away.
"Good luck Korra" ,Rex shouted,
"I'll see you soon. Don't forget about me." Rex looked out to sea as he saw his good friend disappear from sight.