Sure enough he was fully healed and back to his old self, help them train new airbenders, help Toph and Zuko with earth and fire benders. And keep an eye around the nation homes like he used to. He would fight benders to see how they're doing and help decide when an airbender is ready to get their tattoos and how close they are.
He was at home right now and relaxing. He had gotten a new sky bison and named him Appa jr. He missed Appa a lot and will fight the avatar state in him when he thought about the fun of him. His friends and family noticed it, especially Katara, Sakka, Zuko and Toph. They would look at each other and wish they could help him but knew they couldn't.
Katara, Sakka and Toph were surprised they hadn't had a repeat of the desert years ago. But had a feeling it would happen soon. Zuko was surprised he hadn't gotten a repeat of the little fight they had after he became fire lord. He shivered after thinking about that.
"Mom, what's wrong with dad?" Kya asked.
She sighed, "Your father misses his old sky bison Appa. He had lost him when we were at the desert years ago and lost control of his avatar state. I'm surprised it hadn't happened yet to be honest."
"He's a fully realized avatar now mom, he can control his powers now. Then again, he's only twelve." Kya said.
"That's what we're worried about, he's a kid again." Sokka said when he came.
"I'm sure he can fight it. He's fought plenty of people at twelve for the first time to sixties err, a hundred and sixties for the last time. He was a hundred and twelve when you met him right?" Tenzin asked.
"Yeah, I was shocked when we found out he was that old." Sakka said.
A few minutes later they saw him outside and just standing there. They noticed how much trouble he was having and everyone was noticing it now. Then he was on his knees holding his head. The four of them ran to him and hopped he wasn't losing control.
"Aang! You can fight this, you could fight this at twelve when we were teaching you the other three elements you can do it again." Katara said.
Finally he was starting to glow blue in his tattoos and they could see his eyes were blue to. They could tell he was fighting it but finally he lost and started to get up. People from their time was worried while new people were scared.
Katara ran over to him and tried to grab his hand but missed.
"Aang! We know you miss Appa and Momo but you need to get it through yourself!" she yelled.
It wasn't working this time like it used to because this time he won't come back.
"Guys, I need your help. It's not working this time." she said.
They all ran over to him to try and help.
"Come on Aang, you fought that Monk Giutso was gone and you were really twelve and the last airbender. Now you have more benders and animals!" Sakka yelled.
"We're here for you to Aang! You can tell us anything at all and we can help you the best we can! I'm on your side now and still am!" Zuko yelled.
"Come on twinkle toes, you can do it! You fought me when I was training you, your opposite element!" Toph yelled.
They still weren't working well. But he was starting to calm down and low enough for Katara to get his wrist and pulled him and cover him tightly. This was a tough one though, he was still trying to get out of her.
She held him tighter and a few minutes later he was finally calming down. So she gently lessened him. A few minutes longer he was back to normal and still in her arms crying quietly and tired.
"It's OK Aang, you can do it. You have us with you." she said.
He nodded.
"I'm sorry, I had control of it but lost it because I'm only twelve again. And I had it done after what happened with Ozai."
"It's OK, we know what it's like to lose something. Remember what I said, I lost my mom. And now my dad, grandma and grandpa. But we have our old group and now more people than we used to." she said.
"Yeah. I'd still do anything to see them one more time." he said.
"You look tired, why don't you try and get some sleep?"
He nodded and left.
"That was the hardest one I've ever had to work on and seen." she said.
"Yeah, he has a bit of work to do to get control again." Sakka said.
Throughout the week Katara would stay with him to try and help him keep control of himself.