Authors Note:

What is up? I know you're probably like 'shut the hell up' and I get that. But there's some things I feel I want to say. The timeless child is not canon in my story and neither is the Ruth Doctor. The first Doctor is William Hartnell, it's disrespectful any other way. Not only that but the timeless child is horrible story telling with so many plot holes and plot inconsistencies. So, the 11th Doctor here is in his last regeneration like the pre Chibnall era basically. He's only had 11 incarnations before this(including the War Doctor).

You might be saying, who are you to determine Doctor Who's Canon? Well, my answer to that is I don't remember the 11th Doctor visiting UA, do you?

In summary, anything Chibnall era is not canon in my story. I'm saying this because I want you guys to view the story the same way I do.

Doctor Who x My Hero Academia

In the 10th Doctor's Tardis, moments before his final moments.

10th Doctor: "I don't want to go."

The 10th's breathing gets heavier as he fears the moment about to come. And then it happens, he regenerates causing large amounts of damage to the Tardis.

11th Doctor: "AHHHHHHhhhhh! Tardis explosions start to reverberate around the console room as the columns surrounding the time rotor begin to fall.

11th Doctor: "I've still got legs, good! Arms? Yes! Nose? Hair? I'M A GIRL! No, I'm not a girl, and still not ginger but there's another thing, something important, im, im..im." The Tardis violently shakes." Crashing. HAHAHA Woooo, GERONIMO!"

Many bits of the Tardis start exploding and fire starts to spread but suddenly the time rotor starts pulsating.

11th Doctor: "Where do you think you're going?"

Location Change to the USJ.

Shigaraki: "Well, it looks like he's not turning up, so much for the symbol of peace and justice, well then, let's just kill these kids and go home."

Shigiraki exhales: "Nomu kill them."

Tsuyu and Midoriya brace while Mineta hides behind them. They were horrified but but all of a sudden, an unfamiliar sound could be heard Vworp!Vworp!VWORP!VWORP!

All of a sudden, A Blue Box crashes through the roof of the USJ, knocking out some support beams in the process. As the dust cleared, Nomu seemed to have disappeared but Midoriya and the others came to a relieving realisation. It had landed on Nomu, causing more damage than a fall from the Tardis normally would cause due to its weight regulators malfunctioning.

Shigaraki: "What the?"

Shigaraki sees Nomu lifeless under the Tardis

Shigaraki: "Oh come ON! What are you doing? You're meant to be the strongest being on this planet. GET UP!"

Shigaraki: "What a waste. Fine then. I'll just do it MYSELF!"

Shigaraki charges Midoriya and the others, he manages to evade Midoriya's powerful but counterable attack and starts to move his hands towards Midoriya's face but Tsuyu manages to just about grab Deku and then Mineta with her tongue, making some distance between them.

Then when he tries for another attack, a familiar sound is heard this time. A comforting one.

All Might: "FEAR NOT STUDENTS BECAUSE I AM HERE."

Shigaraki: "NO, GET UP NOMU, THIS IS IT, COME ON GOD DAMN IT."

All Might: "I'll give you a chance to surrender Villains. Your choice."

Shigaraki: "Sure. I'm sorry for the trouble I caused All Might, let me make it up to you."

All of a sudden, Nomu started to lift the blue box off of him. He wasn't dead but only temporarily stunned.

Shigiraki starts to laugh like a maniac.

Shigaraki: "Never mind. Looks like everythings back on track."

Shigaraki: "Nomu, Kurogiri, Kill him. I'll deal with children."

All Might grunts: "I'm afraid I only have a minute left in this form"

Fight between All Might and Nomu is the same as in the anime.

All Might is shielded by Cementoss as his strength begins to fade.

All Might: "Are you all right?"

Midoriya: "I'm fine."

Suddenly though, the mysterious Police Box's doors swing open and a man with brown hair in a shredded suit exits the blue box with a cloth in his mouth whilst hysterically coughing.

Doctor then sees the damage around the Tardis

Doctor: "Oh sorry about that."

Cementoss and All Might are shocked but compose themselves after remembering how important the situation is.

All might: "You! Stop right there and get down on your stomach, if you don't comply then I'll just have to stop you too" All Might yells despite his weakened state.

The Doctor whips what seems to be a wallet with a piece of paper tucked into it.

Doctor: "John Smith, you can see the rest, important business that I'm here to do and sorry about the ground."

The Doctor then proceeds to close the Tardis Door.

When the doctor turns his back to All Might, All might takes his chance and tackles the Doctor to the ground

Doctor: "AHHHHhhhh! Didn't you see my qualifications."

All Might: "Even if you are who you say you are. We can't take any risks."

Police arrive shortly after and the Doctor is escorted out by the police.

All might then heads back to Midoriya.

All Might: "I'm sorry I wasn't here sooner, that could've ended badly but you did well. I'm proud of you."

Midoriya is distracted by his thoughts but snaps out of it by All Might.

All Might: "Are you all right?"

Midoriya: "That man. He saved us. That box fell from the sky and knocked the villain out for long enough for you to arrive."

All Might: "Right…I see. Well, I guess he isn't so bad, but I'm just glad you're ok."

Other heroes and paramedics started to arrive at USJ and a recovery team for the mysterious blue box.

Location change to outside the USJ where the students were sitting in Ambulances and were being questioned by the police.

Police officer: "And the final question. Did you see anything about the blue box that might help us or about the man that was inside it?"

Momo and Jirou shared shocked impressions.

Jirou: "Wait, someone was in there?"

Police officer: "Yeah, sounds nuts right?

Momo: "The only thing I saw was that it crashed through the ceiling creating a pretty big shockwave, but I'm not sure if it was related to the blue box or a villain, and I don't know anything about the man."

Now over to Midoriya where he is also being questioned.

2nd Police officer: "So you're telling me that the blue box crushed a Villian."

Midoriya: "Not only that but it created a huge shockwave too."

2nd Police officer: "Are you sure it wasn't the villain, I doubt a wooden box weighing about half a ton could cause a shockwave that big,"

Midoriya: "It only weighed half a ton?!"

2nd Police officer: "Yeah, we figured that out when we were extracting it from the USJ. Hella smoky though. Could barely breathe around that thing"

Midoriya: "Yeah, but it destroyed the ground without taking a scratch."

2nd Police officer: "I'll give you that, that we can't explain. How on earth did it withstand a force like that? Well, I guess we're gonna find out when we get it to the station."

2nd Police officer: "Thanks for your time, an officer will escort you home in a bit. Okay?"

Midoriya: "Yes. Thank you."

Time skip to tomorrow and location changes to the police station.