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3rd PERSON POV.
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Its been 3 years since Izuku's 6th birthday, he grew to be 130 cm or 4 feet 3 inches. Kurama has taught Izuku water walking and Senbon balancing. Izuku has also learned the method on infusing chakra to increase one's speed and One's strength. Even without any enhancement, Izuku himself can run at 35 MPH. Izuku trained himself on how to punch and kick from kurama who showed Izuku memories of Naruto learning Minato's hummingbird style.
Izuku was the best suited for the style which aims to be able to dance around your opponent's moves with speed and precision and hit at pressure points and joints using chakra enhanced attack. Hummingbird style was something Izuku has spent 2 years on. Another major achievement is Izuku's fuinjutsu skills.
All the time Izuku spent on mastering his use of calligraphy paid of as he was instantly able to learn the seals no matter how complex. Izuku has learned the different kinds of storage seals, explosion seals which Izuku attaches on his shurikens. Izuku also learned some complex seals like resistance seals and how to apply weight seals to metals and also learned stasis seal where living things can be stored in a space-time freeze. The downside is that for a human or animal to be stored in it, the human has to either be unconscious or dead.
Izuku's latest learning is the five element seal, Izuku found one thing, he can seal of any quirk which is related to elements and sub-elements except for enhancement quirks, mutation quirks and Quirks related to mind. Izuku on that day found out how terrifying Fuinjutsu is. Now Izuku is learning to from seals with chakra itself, not with ink or paper. Kurama explained that being able to make seals with only solid chakra is the best and fastest way to make seals on the spot and the seals can be strengthened with more chakra.
Izuku has improved in shuri-kenjutsu field, Now being at jonin level. Izuku has also learned how to make chakra strings from chakra and attach them to shurikens or kunai's bringing shuri-kenjutsu up another level.
Izuku is now very fluent in parkour. Managing to cram them into his instincts. Izuku found he can use parkour to build up momentum for some attacks too. The social life of Izuku remained the same over the 3 years, One thing is that-
Izuku wore his mask ALL THE TIME. Even while eating, It a small genjutsu Izuku learned and applies on the surroundings when eating. Coming to Ninjutsu's, Izuku learned the 3 basic ones being substitution technique, a body clone technique which only created a visual clone with no characteristics.
Now we have Izuku's personal favorite, The body flicker technique, where you apply appropriate amount of chakra to travel to a place in mind in a straight line. Izuku when first learned the jutsu thought ( can't I upgrade this to use in battle..)..
Izuku found that the lowest possible amount of chakra in body flicker can make him go 5m. Izuku hit a of trees and had different injuries as he mastered his first speed related technique he named Flash step. Since all Izuku needs is 1 step and he disappears. The only disadvantage is that in mid-movement you cannot move your body to be in appropriate attack state in middle of a body flicker But Izuku can managed to flicker to Appropriate blind spots in order to attack which he demonstrated against Kurama in a training match.
Izuku with age developed an innate skill of sensing people. Izuku when closing eyes can see the outline of people due to the small amount of chakra they have to live. Izuku trained upon this skill with the help of Kurama and is now able to feel the location of someone he wants wherever in the range of 20 meters.
Momo has also grown alongside Izuku, still being the same height as him as Momo still has the same personality that Izuku is thankful for, but in the face of a stranger, Momo's face becomes neutral and her tone changes to how a young lady speaks. Momo has also learned shuri-kenjutsu to a high degree.
Momo seeing Izuku make chakra strings to attack to his kunai or shuriken before throwing to guide them mid-air also has managed to make a thin, strong thread out of her finger tips to attach to the shuriken or kunai and control them. Momo has to do some strength training in order to be able to move the shuriken mid-air with string by just using her fingers.
Momo's parents praised her at the creative mind and Izuku praised her too. Momo has learned how to use weapons over time, Momo would practice against Izuku who will use completely blunt kunai's. The parents themselves got close to each other. With Athena spending a lot of time at Inko's house along with Momo when Akira is at work most of the day.
They also had countless sleepover's too. Izuku and Momo grew up close to each other. Izuku told Momo about his quirk and about himself before Momo came into his life. It was a emotional night where Momo didn't dare leave Izuku alone.
We now have Akira who has been in a mission for past 2 years. Izuku has not revealed his face at all in 2 and a half years and everyone is trying to get even a glimpse of it. One day after his plans died out, Akira physically tried to catch Izuku who would just use Flash step to appear a bit away from Akira. It was funny for the girls seeing seeing a grown man struggle to even touch Izuku.
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NOW, AT PRESENT TIME.
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Its been 3 years and 3 months since Izuku has started training. Kurama held off the most important part which is Strength and speed training through resistance seals, which Kurama waited till Izuku was at least 9, since by then, the body would have its first growth spurt. Kurama remembered during his time in Kushina when Minato in his late teens one day came to her and told her to apply the resistance seals on his body.
Kurama then looked at Izuku's hands which have a storage seal in his right hand storing kunai's and another storage seal in his left hand containing shuriken. Kurama had to admit. Not carrying anything on person increases his efficiency during battle. Izuku just has to pulse a little bit of chakra and desired number or kunai or shuriken would appear in his hand.
Izuku who just went through his birthday is now in his mindscape, looking at Kurama. Kurama then said " Today, I will teach you a jutsu called shadow clone jutsu, you can create actual physical clones with this jutsu, they will have the same strength and speed as you but are dispelled in 1 good hit. The one crazy thing about shadow clone is that it passes memories and experience back to original when it is dismissed. Meaning you can use it to train your ninjutsu, chakra control and taijutsu stances faster.".
Izuku was in awe at the description of the jutsu and asked " Wait, can you practice Fuinjutsu too?", Kurama nod his head as he shows the appropriate hand seals to Izuku. Izuku after repeating the hand seals, produced 50 clones, Kurama then warned Izuku not to dispel them all at once.
Izuku nodded as he slowly dismissed them in the group of 10, due to the shadow clones doing nothing, Izuku didn't get any headache. Kurama then said " Use the shadow clone to apply resistance seals at lvl 1 on your back.". Izuku nodded as he went back to his physical body and closed his eyes, effectively sleeping but with his sensing abilities on full swing.
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TIME SKIP- NEXT DAY MORNING . 5 AM.
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Izuku woke up as he brushed his teeth and did a face wash and picked up his calligraphy set went to his training area. Izuku Did some hand seals and a shadow clone came into existence. Izuku said " Draw a level 1 resistance on my back.", The clone nodded as it took a few minutes for it to skill fully complete the pattern.
Izuku applied chakra activating it as Izuku tried walking forwards. found himself put double as much effort. Izuku said ( how long till I get used to this sensei?). Kurama then explained " Minato took at least 2 months to train back to his normal speed at resistance level 1, but with me inside you and constantly repairing and upgrading the straining muscled, I recon a 1 and a half month. There are only 5 levels to this. Meaning 5 times what have now is the limit of the resistance seals.".
Izuku nodded at the explanation as he walked back home, Izuku already is feeling the strain as his Mother asked " Izu-chan, why do you seem soo exhausted?". Izuku explained the new training to his mother who nodded at it and said " As long as you don't stop growing in height, I will approve. ". Izuku explained the details about the seals as Inko approved and Izuku had some juice and went right back to training.
Izuku felt like he was training for the first time again in his life with the exhaustion he is feeling right now. Izuku can definitely feel it ( I will have to go through those horrible muscle cramps again.).
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TIME SKIP- THE NEXT DAY.
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Yep, Izuku was right, Izuku is now going through the training once again but with the cramps making it more hard. Izuku then thought ( Sensei, you said to remember the location of the cave, but we haven't gone there till now. what do we do about it?). Kurama's voice was heard as he said (Since you mentioned kit, we will go there today and don't forget to bring some storage scrolls to store everything. ". Izuku nodded as he went to home to get breakfast.
Izuku packed some storage scrolls in a storage scroll as he turned off his resistance seal to be done with the task quickly.
Izuku then put up one seal and disappeared from his place. Appearing once every 400 to 500 meters. In 2 minutes, Izuku made it to the hideout. Izuku then went inside as Kurama said " Put the weapons on 1 scroll, the dad's jutsu side in 1 scroll and the Mom's technique's side in 1 scroll, Then you can put the self created technique's in a scroll at last.".
Izuku nodded as he went to the neatly arranged scrolls which have dust on them and stored them in each different scrolls while naming the scrolls according to its contents. Izuku finished up in half-and-hour and then looked around the hideout and saw a huge claymore sword to the side.
Kurama who saw Izuku noticing the sword said " The sword used to belong to a strong person who taught Naruto a important lesson the ways of a ninja. Take the sword, you can blunt it with the whetstone and be able to use it against opponents, Naruto also did store the kenjutsu scroll for that claymore, its name is Kubikiribocho, or the executioner's blade.".
Izuku tried lifting it but it took his full effort and his both hands to do so. Izuku then drew another storage seal on the palm of his hand as he stored the weapon inside. Izuku then left the cave and flickered home as he entered his house and went to his room. His mother finally allowed him to move out of their joint room to a new one, even though a lot of crying from Inko and demands of hugs and kisses were made. Izuku kept the scrolls in his bookshelf and then let out a breadth as he re-activated his Resistance seal.
Izuku then went to the training ground again as he thought " Its time to train..."
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