'I have two weeks for training what should I do, what should I do ? Mina can handle herself at my home. I like to come to my mom for a day or two.....*heavy sigh*...... I guess I'll go to the support department I'll ask them to prepare a training area or a gear for me to train with...'

Izuku walked into U.A as the only department that was freely allowed to use the school was the support department as they needed a working place. He slowly walked down the hallway and as he knocked on the to the workshop something crashed right through it and flew with him against a wall.

"MEI DIDNT I SAID TEST THE BABYS OF YOURS OUTDOORS!!!?"
"Oh come on no one got hurt did one?!" "Alright and who's this boy which is slammed against a wall!!!??.....Wait there's a boy slammed against a wall!!!! MEI QUICK HELL HI-"

Powerloader was extremely hysterical at the moment until the boy, our Izuku rose up from the wall and dusted him off. "Argghh-....oh....man that was a freaking doodle head hit !! So what was that which hit me right now?" Izuku asked with the happiest voice someone who just got hit with Iron-rocket-fist that weights about 100 pounds.

"W-well that was a baby from Hatsume here....but wait a minute you're the boy who destroyed my Zero-Pointer!!? WELL!! Come in I'm happy to see you !" "But I destroyed it why are you so happy ?" "Well every not pro hero who can destroy that kind of a robot must be having serious business here and I would love to doing something for you !" Powerloader was surprisingly happy to see him.

"Well I wanted a training gear that is effective but also spares time for me so it's easy to use." "Well I would love to help you but I think Hatsume has to help you I have to go now. Well next time you see me I have a present for you !"

So Izuku stood there alone as Hatsume did her things....whatever she did. It was an uncomfortable silence as only he and Hatsume stood there but she didn't cared a bit. "W-well you're able to help me ?" Izuku finally asked as Hatsume still worked on her baby only giving a nod as she wanted to walk away he mentioned his 'baby' he wanted "Well I wanted something that's effective and spares time and that was a-!!?"

As she heard spares time she moved her head so fast that you could see/hear it crack. She grapped his wrist and took him with her to a wall and and she pushed some numbers on her phone and the wall started to open and she walked with him in some sort of white realm with a palace looking house small but still. (A/n the sand things on the sides are also I just have no clue what they are called)

"What is this place?" He asked "Well you wanted a baby that spares time right ? Well here it is !" She exclaimed extremely happy. "Well how does this work where is your so called baby ? Is it this house or the sand things?"

Mei began to giggle "Well this whole realm is the baby! Well it works like this *clearing throat* I stole some government time blueprints don't judge me they were about to build some weapon with it so. As i was saying I stole these blue prints along with some technology and found a way not only to create a realm but also to change time and space. It sounds crazy but it works! 24 Hours outside are 10 days inside could imagine what this could change for sparing time in every way possible !? I was original aiming for one day outside to 1 year inside but I thought would be too long so here ya go ! " She said and Izuku didn't knew how to respond to this he just couldn't understand even with some high ass IQ how someone could bend time and space!! Well think about it that's hilarious!? How should something be able to disturb time itself and breaking every physical law to exist at the same time?! "W-well that's....neat? I think but does anyone know about this ? So except me and naturally you?" Hatsume smiled "NOPE!" She screamed happy and prideful. "W-well that neat too? Whatever am I really allowed to use it? Because it's strange that you took me here and only I know it because of that so why me?" Izuku really wanted to know why it was mysterious to him.

"You see you were the first to ask about some time saving training gear and not something for timesaving with his/her quirk and second I know you would never tell anyone I read your files I did on every hero in training and lastly you're way to cute to not share something with you!!" She explained to him and he must say he blushed at the cute part and he couldn't deny it she was really pretty and had good assets and all but he had a girlfriend that he truly loved. He never could betray her.

"Well that's awesome and pretty nice of you, thanks. So could I use it for around 10 days outside ? And would I get older in here ? " "First yes you can use it but come out everyday to talk to people, I will interrupt you everyday to say when it's safe to come out and if I'm not coming in don't come out kay? And second no you don't get older in there." That was awesome for Izuku as he thanked her a lot and got on his way to buy groceries which could could feed a 10 headed group for 6 months.

Cut short he spend all his money on food. He got home and spend some time with Mina and told her about it that he will train and live there for 10 days. Well he didn't told here that it was a room that could noodle doodle time and space. So as he got his bike still at school and he couldn't ever drive all that food he bought with bike there he took his mother's car that was a Sprinter. But she also had a SUV. Don't ask why she had a sprinter she said she needed one but Izuku didn't knew why and he wasn't going to question her. He excused him and took it as he drove off and load all his things in the Hyperbolic Time Chamber how Mei called it. He load his own bike in the sprinter and drove home and load it out.

"HEY HONEY SHOULD I DRIVE YOU HOME?" Izuku screamed from the doorway as he didn't expected her to be right in the kitchen " Yes Izu-baby but you know you don't have to scream~" she said seductively. Izuku blushed to no avail first out of pure embarrassment and second from the nickname she had for him, she normally called him honey too. Lucky for the two his mother wasn't there so still no one knew and it would be a big surprise later on. He drove her home and they gave each other a kiss.

He drove to U.A and thanks to Mei writing the code down and installing her own made app for the wall on his phone he snuck into the Time Chamber.

He would be there for 14 weeks and 2 days or just 100 days.

First week: Simply training; Weights up to 250 kg

Izuku was peacefully training with some heavy ass weights without his quirk so it was hard for him to keep up but he did as Mei burst threw the door and startled him and he falled with the weight cutting his left arm and also breaking it. Mei freaked out and instantly brought Recovery Girl in there. She explained the situation and Recovery Girl didn't cared on bit about the room she just healed Izuku and walked back to the nurse office. Izuku was asleep because of he was exhausted and got  his stamina robbed off because of Recovery Girls healing. Mei brought him to bed as he slept about 3-5 hours and she watched some movies on the TV there. As he woke up he was refreshed but his arm still stung a bit. Mei immediately apologised for it and gave him some off here cooking because she felt sorry and she told him that it get a scar but Izuku didn't mind he had one in his face so it wasn't that bad. After a day he could move his arm like it was new. He began to train again.

Second week to fourth week; trying to find a way to use OFA without energy loss

Explanation: His electricity around him when he uses it is nothing more than loosed kinetic energy of OFA. When uses OFA at 10% he will have constant energy loss of around 20% of his actual power he could have so if he use 10% OFA, he use actual only 8% of it that means if he would use 100% he would only use 80% but the more power he use the more he loose energy so he would only be able to actual use 72% of his 100% if he can't solve this problem.

Fifth week to seventh week problem solved: Izuku finds out about that the actual only way to solve it is stronger muscles and more endurance.

Izuku goes through some painful training like he always slept like a rock but at 'night' when he gets sleepy there is no day night cyclus. Fire and Ice-storms are happening in that realm so he only trains at night when he would normally sleep Izuku gets severly injured and passes out multiple times but he found a bag with a note on it

- Idiot

These are some beans that can heal any damage to your body but no sicknesses. Use them you fucking idiot.

From - Vegeta the King of all Saiyans

He didn't knew if he is tricked there but he took one and he feels immediately better. He got more and more scars around his body as his arms had about 24 of them and his chest about 8 his back had around 17 as he often didn't paid that much attention to his backside.

Eighth to ninth week: expanding speed dramatically and endurance ;reflex/speed and endurance

Izuku took a machine from Hatsume which should throw big steel bullets at him with high speed. He got from this training alone from 4 Mach that he could do around now to 9 Mach doubled his speed which was already impressive. But this kind of speed would need him to be strong enough to withstand the windpressure, heat and sudden stops who should rip his flesh off his bones. But luckily he should be able to hold his ground against even faster movement.

Last 5 weeks and 2 days

Izuku began his martial arts training and after some time trying out some new styles he got punched hard on the jaw as he flew maybe around 400 feet and rolled around 40 of them. "Hmph I thought you would be fast enough to dodge that..." Some voice said.

E/C so this is it and should I make Izuku a full fleshed Saiyan

Yes

Or

No

When yes this ultra instinct will be his 'quirk' BC......plot

Cheers