The lights began flickering on and off and Luke came out of a portal.

"Okkkkk. There's something wrong with the theater, so right now I can only show a trailer instead of a universe. This is the trailer for a universe where Iida went back in time to prevent his brother from ever being paralyzed, but it messed up his universe and others" said Luke before pressing a button on his remote, although he had to press it again to get it to work.

It began with Iida in a new suit of armor appearing in front of a house in a neighborhood at night time with blue light around him.

"Tell me something" a voice said that sounded like Izuku's.

"You can go anywhere" Izuku said.

It showed the roof of UA in the afternoon.

"Another timeline" said Izuku as it showed the front door of Iida's house opening.

It showed a Deku cowl on the floor of a UA bathroom with blood around it, as well as other pieces of Izuku's costume near it. Although the costume looked to be red instead of green.

"Another universe" Izuku said.

It then showed the present day where we see Deku flying after an armored vehicle.

It then showed Iida sitting there in civilian clothes and on the phone.

"So why do you want to stay..." said Izuku.

It then showed Iida in the present day. He was running at super speed, but then slowing down as he arrived at an place where civilians were running away.

"... and fight to save this one?" Izuku asked.

It then showed a hand pulling a switch and then quick flashes of things happening, then the screen turned black. Then it showed Iida.

"Because this is the one where my brother is still a hero" said Iida.

It then showed Iids as a kid, bonding with his brother.

"I'm not gonna let his life be ruined again" Iida said.

"I appreciate you trying to help me, Tenya; but messing with time travel just so I can walk isn't worth it" said Tensei.

It showed Iida arriving in a hospital room to see his brother injured and in a hospital bed.

It then showed Iida running through the streets of Musutafu at night at super speed.

"Time has a pattern..." Iida said.

It then showed Iida running as exercise while it almost immediately changed from day to night. Iida as Ingenium was also there as his younger self ran by him without noticing him.

"... that it can't help reliving" said Iida.

"Mei was able to build a suit of armor for Iida that would allow him to run through time. That's how he did all this" explained Luke.

A bruised hand was placed on a framed photo of Izuku as a child with his parents.

"Different people, different worlds..." Iida said.

It then showed Iida in his room as time moved slowly and he looked at another picture, this one of him with his brother, but he was the same age he currently was.

"... drawn to each other like... magnets" he said as it showed him approaching his brother, who had his back turned in a training room. When he placed his hand on his shoulder, he nearly jumped, then turned around to face him.

"You scared me, bro." Tensei said before noticing the shocked look on his brother's face, "You ok, Tenya?"

It then showed both Iida brothers approaching UA, which was all decrepit and in the fog.

"If you were to go into the past..." said Izuku's voice.

It showed Iida having a giant blast of blue lightning go through him and towards Tensei who was in front of him.

"... you have no idea what the consequences could be" Izuku's voice said.

It then showed Iida's armor opening up for him to climb into.

It then showed Iida talking to Izuku, both of them in civilian form.

"Midoriya, I could fix things" said Iida.

"You could also destroy everything" Izuku said.

It then showed Iida in a public area and watching All For One on TV.

"This can't be happening" Iida said.

It then showed All For One destroying Musutafu.

"I completely broke the universe" Iida said as it Tensei standing on the roof of a building and watching it all.

It then showed All For One standing on top of a ship of some sort.

"All For One..." Iida said.

"We've been waiting for you" All For One said as he seemed to be talking to someone.

AFO turned his arm into a huge blade as he walked through a battlefield.

It then showed Iida, fully in costume, standing in a room with a red light and in front of someone who appeared to be restrained to a wall.

"I created a world with no heroes..." Iida said as it showed a costume lying on the floor of a dark room that looked familiar to the audience.

It then showed a light shining in a dark room as it showed a woman on her knees and resting her head and arms on her bed. She looked like she had been through hell.

"... and now there's no one to defend us" Iida said.

Everyone was shocked that Iida managed to erase heroes from his universe.

It showed AFO's warship blowing up soldiers who were trying to attack it before the screen turned black.

"Want some help?" Izuku's voice was heard again.

Iida flipped a switch that had cobwebs all over it and lights turned on. It showed an underground superhero base with computers, gadgets, and vehicles covered in cloths.

It then showed the back of Deku's head as he stood on a platform that had a superhero jet of some sort in front of him. The cowl he was wearing looked different from the one that the normal Deku wore. This one was red.

The audience leaned forward in their chairs as they waited to see who the alternate Izuku was.

Iida and Tensei both stood on a staircase near where Deku was. Tensei dropped a mug he was holding.

"Holy..." Tensei said.

It showed that this Deku was none other than Mikumo Akatani. He wore a red Deku costume that had a few other differences.

It's this Deku:

"You're... You are..." Tensei said as he was at a loss for words.

"Yeah" Mikumo said as he nodded.

"It's Yamikumo!" Ochako said.

"I'm Deku" he said with a smirk.

It then showed Mikumo in an enemy base, gliding down with a cape at an enemy soldier and taking him down, then grabbing another enemy and gliding upwards with him, then throwing him into the ground.

Tensei fainted.

It then showed Izuku as Deku in the original timeline, chasing the armored vehicle. Then it showed the woman from earlier wearing a white cape and holding someone in the air while flying up into a stormy sky. Then it showed the entire ground collapsing in front of a hospital Iida was at as Ingenium.

"If I can't undo what I did..." said Iida.

It showed him running at super speed up a building. Then it showed Mikumo as Deku, landing on the ground and pulling out a gadget of some sort. Then it showed Iida in civilian clothes, moving at super speed with his brother in front of him.

"... If I can't get back..." he said.

Then it showed both Iida brothers in costume, moving at super speed. The bottom's of their foot's touched each other as they both moved at super speed as they were in front of All For One's battleship.

"There might not be a future!" Iida said as he grabbed his brother by the shoulders in his room.

It then showed a bunch of other crazy stuff before we see Iida on the ground in a snowy military base as soldiers all aimed their guns at him.

"What's the play?! Deku, what do we do?!" he said.

"We try not to die" Mikumo said as he turned his hand into a fist, then lowered it to show the woman from earlier flying in the sky.

The woman took out multiple soldiers with super speed and super strength.

"That's not All Might" Iida said as it showed them inside UA.

It showed that the woman was an elderly Nana Shimura

"My name is Nana" she said.

"NANA?!" All Might said.

"I- I'm-" Iida tried to say.

"I'm Tensei and this is my brother" Tensei said.

It then showed the title, which said 'INGENIUM.'

It then showed Nana in her costume and flying alongside Mikumo's jet. Both Tenya and Tensei were in the ship and Tensei filmed Nana flying with his phone.

"Tensei, what are you doing?" Tenya asked.

"Our kids are gonna want to see this" Tensei said.

Nana then zoomed ahead of the Deku jet and the screen went black.

"So, basically, Iida ran back in time, but the effects combined his universe with that of the prototype MHA universe, so now Mikumo Akatani is this universe's Deku. All Might died instead of Nana and she was being experimented on by All For One before Mikumo, Iida, and Tensei rescued her. Now it's up to the four of them to stop All For One and change everything back to normal" explained Luke.

"We should all take this as an example and never use time travel" Nezu said while everyone else nodded in agreement.

Thought I'd show this quick little chapter since I'm hyped for the Flash movie. Also I'm considering doing a book like this that's based off the Flash movie and No Way Home. Let me know if you think I should. Thx for reading.