Hiro Hamada had made it a point to visit Callaghan after he'd been arrested. He understood in his eyes that he was guilty about Tadashi's death. Although he never seemed to be able to speak much during the first few times, he gradually began to talk more to him.

He explained that in the end, Abigail even became a teacher at the SFIT. That he was in her class now. He told him about the Tadashi Hamada building that had opened, then the boy paused, unable to continue.

The older man frowned, feeling once again guilty, it was his fault his brother was dead. His fault, if he'd known Abigail was still alive in there, he would've dove into the portal himself, instead of seeking revenge.

"He...Would have been proud of you." Callaghan muttered, seeing a tear streak down the boy's cheek. He knew it first hand, death is not something one gets over in time, the scar of such a thing was too deep. He knew that those words would probably only fuel his tears, "Hiro...I'm sorry." he said for the first time in the past year.

Hiro looked at the former professor, then wiped away his tear, "Tadashi really looked up to you." he started. Causing more guilt to enter the professor, Hiro continued, "He wanted to help a lot of people in life. He wanted to help heal and...I forgive you." the last part was croaked. But he obviously meant it, Callaghan was about to ask how Hiro could possibly forgive him for that, but the boy answered his question, "When I was five, Tadashi held tightly to my hand...He led me down the streets and to a house I didn't know. He knocked, and there was someone I'd never forget-The other driver. Who had gone home drunk."

The boy swallowed, then continued, "H-He almost shut the door in our faces in shock. But...Tadashi said he forgave him for it, that he didn't mean to kill our parents...I-I didn't understand how he could...But...I do now."

Hiro took in a breath, wiping away more tears, "You didn't know Tadashi was still anywhere near the building...You thought we went home with everyone else...You didn't mean to kill him..."

Callaghan began to cry now, he'd killed this boy's brother, this boy who was already orphaned in life. But Hiro Hamada-Had forgiven him? It was too much for him to take.

"Abigail says she'll visit soon." Hiro said, "I gotta get going." with that, as usual, he left.

Callaghan was being led back to his cell-Hiro may not be tall, but he was certainly the bigger man between them.

Why couldn't he forgive Krei for what he did?

Why couldn't he seem to ever talk to him after that? And keep the friendship that they'd once had?

Abigail's dissapearence was meerely an accident. She wasn't even dead.

He remembered why-Someone kept pushing him. Every day someone he didn't know gave him a note. Saying how terrible Krei was, that it wasn't fair that he wasn't rotting in prison right now.

They kept pushing every button he had. To the point where he was seeing red every time he was within ten feet of the man. But he hid it well.

A note appeared at his doorstep.

This robotics fair looks quite promising. Perhaps in this-You could find some closure.

Callaghan found out what he meant. The inventions there were better than ever...Then there was Krei. He was there, looking for new tech for his company.

The best one there, by far, was Hiro's microbots. Krei knew so, too. He wanted to buy them.

No, Callaghan couldn't let that happen-Then that man would cart them all away on the spot. It was in the end, Hiro's choice. But luckily both he and Tadashi seemed to sway him not to sell.

Then the fire happened, setting everything else ablaze. The inventors could rebuild, could escape. Hiro was the only one who made something durable enough to survive the flames.

He'd made it to a warehouse that he knew to be abandoned, hidden from the rest of the town, where he could begin in peace.

There was a mask and some tools waiting for him. A simple note-

Good job.

He knew what to do, he pulled apart one microbot in order to see how it was built, and managed to create a machine that could make more.

Newspapers occasionally were there, more than likely from whoever left them last time.

One told of the new Krei building opening. Krei stating in the papers that, despite setbacks, they needed to continue forward. Another note-

Was Abigail really a setback?

Things were brought, revealing the locations of various, familiar parts.

This pushed another button in the once kind professor. But then he heard someone's voice coming in, "My...Microbots? Someone's making more."

Yelling now, "You gave me a heart attack!"

"My hands are equipped with defibrillators-Clear."

"IT'S JUST AN EXPRESSION!"

Nonono, Hiro was the one person who could stop him from this! He invented microbots, and would more than likely know how to deactivate them on the spot.

He put on the mask, which he'd attached to the transmitter, and commanded the microbots to attack.

He didn't want to hurt Hiro, but he wanted him out of the way. If he needed to scare or kidnap him to ensure that, he was surprisingly fine with that.

He'd hurt them all, he'd felt a bit of guilt when Hiro said his brother died. But he ignored it, trying to put the blame on the one gone.

Hiro in the end, called for Baymax, the last thing created by Tadashi, to destroy him.

Callaghan managed escape.

But all this-To be stopped by Hiro in the end. For Abigail to be alive in the portal. Hiro...Risked his life to get her back.

He didn't deserve the boy's forgiveness. But he got in nonetheless.

The guards dropped him off in his cell, and Callaghan noticed something tucked under his pillow.

Another note-

Your use is no more. Should you warn him or stand against us, we have no qualms in disposing of you. Or him.

What-Use? What was he doing, then? Warn...Him? Krei? Somehow that didn't seem right.. Hiro? Dispose?

"Oh...Oh no." he muttered, then saw the guards turning to look at him.

In fear, the old man swallowed the paper before they could see him. He didn't want to risk himself, he needed time to think of a way to warn Hiro anyway without setting off any red flags with..Whoever this was.