Disclaimer: I do not own Mob Psycho 100. If I did, Reigen would've officially adopted every esper kid.

Forget

No one noticed; it was that inconsequential.

Even Reigen himself didn't notice it. He went about his day, conducted his business, and continued to live as he had.

And then he realized it one day about a month later. He knew with this knowledge things could no longer be the same, but he couldn't let things end like this.

So he forgot about it. He lied to himself and pushed it from his mind and continued on. He knew that there was something he had forgotten, just a tiny itch at the back of his brain, but he also knew it was for the best.

Reigen was so skilled at lying, he could fool even himself.

Shortly after a boy with real psychic powers showed up at the door of his office, and Reigen knew that this was why it was so imperative that he forgot.

So he did.

Things went fine for quite a while. Sure, he remembered every now and then, but he always managed to easily forget it.

For some reason, when Mob began his second year of middle school, it became a lot harder to forget.

Mob asked Reigen whether or not he should exorcise the ghost following him.

Reigen distantly wondered if this had anything to do with Mob's melancholy mood the other day, when he had been debating whether it was all right to dissolve the (false) happiness of others with his obliviousness.

He glanced at where Mob seemed to be indicating, wondering how he should fake this, because, of course, he couldn't see anything. He wasn't psychic, he didn't have any real connection to the supernatural other than Mob -

Reigen saw a glimmer of green and remembered.

And he promptly made himself forget.

Luckily, Mob bought his advice of making his own decisions, so there was no lingering need to think about it more.

Though later that night, Reigen wondered if he was inadvertently stifling his own potential and couldn't help but wonder why he thought that.

The next time he remembered was when the situation was dire.

A group of espers - adult espers! Reigen hadn't even known there were others besides Mob - were attacking him, Mob, Mob's brother Ritsu, and Mob's friend. These adults were going all out against middle schoolers!

He'd tried to negotiate. Reigen had never been so surprised when it failed. Though the people who were now fighting with Ritsu and the other kids were adults, it was clear that their mentality was that of a kid's.

And they were calling upon Mob to use his powers to fight.

Mob.

Mob, who didn't even want to hurt a fly.

And Mob was actually going to do that.

He couldn't let him.

Not Mob.

This would destroy him.

He had to stop him.

Reigen gained Mob's attention by grasping his face, drawing Mob from the trance he was falling into.

"Stop it, Mob. You'll only make yourself suffer." If there was one thing Mob learned from him, it had to be this. "At times you don't like it, it's okay to run away!"

Pain erupted along his back and in his shock, he let go of Mob and fell to his knees.

What had happened? He shouldn't -

That's right. I'm -

However, he forgot as a strange power seemed to fill him.

He rose to his feet.

Reigen was the adult here, and he was taking over the situation.

Reigen wasn't sure how to feel about Dimple.

The spirit was full of himself and held himself up as a powerful, evil being.

Personally, Reigen just thought of him as an annoyance at his worse. Dimple wasn't that bad and it was nice to have someone else to talk to besides Mob. Maybe they could one day be considered friends.

Still, what Reigen found interesting about him was that Dimple, despite being a spirit, considered himself "alive."

Am I really that different? Reigen asked himself in a moment where he remembered.

Then again, sometimes the line between the living and the dead wasn't all that clear, Reigen couldn't help but think as Mob refused to exercise the innocent ghost family.

And sometimes it was the living that were far worse.

He forgot each time before he could come up with an adequate answer.

Mogami scared Reigen.

The spirit managed to scare all of them.

Reigen was not a psychic, but even he could not ignore the malevolent and violent aura of Mogami Keiji once he was finished hiding behind the girl.

His violent actions were enough cause for alarm, but then there was the fact that even Dimple was afraid of him.

And Mob ended up facing him alone. Reigen had admitted that it was the best way to save the girl and themselves, but he hadn't liked it.

Something happened when Mob was confronting the evil spirit. Reigen didn't know what, and there was no way he was going to push the kid into talking, but whatever it was, it wasn't good. Mob seemed...jumpy, and it pissed Reigen off.

That, more than anything about the incident, is what made him remember.

I will never become like him, Reigen vowed before forgetting once more.

Part of the reason that Reigen threw himself into his work after he and Mob parted ways was so he wouldn't remember. His subconscious was looking after him at the very least, even if he was tired and worn in every other way.

But it began to crop up more and more frequently though. He was worried about it slightly, but as he managed to forget, he brushed it aside.

After he was exposed though, he couldn't forget. He remembered and none of his usual tricks were working.

He'd never remembered for so long before.

"What's the point in forgetting now?" Reigen asked himself, pacing in his room the night before the reporters declared they'd be having a press conference. "No one needs me; this whole thing is blowing up. Mob - "

He sighed and raked his hand down his face.

"This is pointless." He muttered.

The next day, if Mob hadn't interrupted and saved Reigen from the crowd, the conference would have ended very differently.

But Mob did come back, and Reigen forgot once more with a grateful heart.

The fight against Claw made the memories flicker to life several times.

When Dimple offered to possess him to defeat the esper sent after them, Reigen knew it wouldn't work. However, he brushed the memories to the side and stepped out, with everything eventually working out, though Mob and Dimple ended the fight far from him.

He was almost glad that no one thought too hard about why Shimazaki hadn't been able to sense him when he came up to him. For the first time, Reigen was glad about his lack of psychic power as it gave him the perfect excuse and he squashed memories down.

The real moment of danger was when Touichirou decided to blast him away for interfering with the fight with Mob. At that moment, Reigen's life flashed before his eyes -

And he remembered.

Thanks to Serizawa's timely interjection, he managed to forget though.

They all managed to get through the incident, though Reigen could've sworn his heart stopped when Touichirou and Mob exploded.

It didn't seem to restart until he, Ritsu, and Hanazawa unearthed Mob within the giant broccoli.

The "Divine Tree", as it was being called, unnerved Reigen.

There was something off about it. It surprised Reigen how much he wanted to avoid the giant plant. After all, it was created by Mob; how bad could it be?

Still, he kept his distance until, looking into it, he discovered how much damage the thing was doing. It had to be stopped and he and Mob were the best bet to do it.

Distractedly, he noted that all spirits that approached the plant tended to disappear.

He tried not to think about it.

The aliens didn't make him remember per say. It was just that they reminded him how small he and the others were in the giant universe that they lived in.

He tried to remain the reasonable chaperone for the kids though, even with the truth prickling at the back of his mind. He made sure that they got out of there safely.

If the telepath noticed, Reigen was grateful that he didn't mention it before he completely forgot once more.

It wasn't until after New Year's that Dimple reappeared. Reigen had been afraid that the green spirit had gotten tangled up in the Divine Tree and disappeared.

For some reason, it made something squeeze in Reigen's chest that such a lively spirit could disappear so easily. He was glad that wasn't the case.

And his reappearance helped break Mob out of the funk he'd been in as well. Though the adventures with the Telepathy Club had also helped, Dimple reappearing really was a win-win.

Also, though he would never admit it, Reigen had missed him too.

Life moved on. Mob managed to survive middle school against all odds and went to high school, Serizawa passed his classes, Ritsu continued to hate him, Dimple stayed the same, and Reigen was with them all every step of the way.

Sometimes Reigen still remembered, especially when his and others' lives were in danger which was all too common when involved with espers, but each and every time he managed to forget.

He couldn't help but note though, that it got harder and harder each time.

I can't keep this up forever. Reigen thought to himself with a frown. I'm not going to be able to last much longer.

But as he watched Mob get his high school diploma, he couldn't help but smile, clap, and cheer in the most embarrassing of ways. He smirked as he saw Ritsu hide his face in his hands just a few seats away, but it was Mob's tentative wave as he got off the stage that made it worth it.

Maybe just a bit longer. He thought to himself.

And he forgot once more.

Life moved on again.

It had been over 12 years since the first time Reigen had met Mob.

Considering that all of this had started before he met the boy - no, technically he was an adult now - Reigen thought he had done pretty well.

They were all in the restaurant celebrating Mob and Hanazawa's graduation from college. Almost all of the old gang from those peril-filled middle school days when all this started was there, even though they had begun to drift away long ago.

Reigen smiled as he looked over the kids - well, technical adults - having fun. They had all grown up so much. Shou and Ritsu were having an argument, but the pout on Ritsu's face told him who the victor already was. Hanazawa had somehow grabbed a hold on Dimple and was waving him around, much to the spirit's distress. Serizawa had gone over to try and help him. Kurata and Mezato were sharing photographs, Mezato's from cases she was working on and Kurata's from alien sightings. The former members of the Body Improvement Club were attempting to convince the former Awakening Labs espers to begin body training.

It was a wholesome scene overall.

And Mob, of course, was as awkward as ever, sitting there sipping his drink and looking around with a gentle smile on his face. Still, he was surrounded by friends and having fun.

Reigen could not have been prouder of his student. He had finally become a good adult.

And that was how Reigen knew that things, for him at least, were over.

He couldn't forget any more.

He finished off the last of his drink and quietly took his leave.

AN: Anyone figure out what's up with Reigen? It'll be revealed in second half, which is from Mob's point of view. Let me know what you think is going on and kudos if you have figured it out.

I'm also working on getting an AO3 account at the moment, so once my stuff goes through, I'll probably be posting this and my older stuff there. Just a heads-up.