Haruto spent quite a while working on the jutsu, and he was quite spent by the time he ended training, yet he wasn't done for the day.
Haruto went back to the R&D department and sat down at his desk that was now empty of any workers and began to train the model on the already readied data that the people he'd hired had cleaned up for him.
He needed the training to finish quickly if he wanted to get a handle on Hiruko's unique body modification jutsus.
'Did he even write it down somewhere?'
'If he didn't write it down anywhere… this'll be a massive waste of my time… and effort.'
Then once the machines were set to pause training before the people he'd hired came back tomorrow, Haruto quietly left the R&D department to go back to his home.
By the time Haruto reached home he was dead tired. He slipped into bed and trained with Unohana for a while before falling sound asleep without even eating.
***
The next week or two proceeded in the same boring routine for Haruto.
He woke up early in the morning then went to the training ground seven to see what Kakashi had in store for him today before going to the Interrogation and Torture department to train under Daichi.
Training under Daichi was usually a begrudging affair with several shouts and curses being thrown his way. On the work end, it involved a lot of dissecting and poison extraction jutsu.
At the end of the two weeks however, Daichi seemed to hold a more favourable and improved impression of Haruto. At least his cursing had reduced to the bare minimum, shouting only when Haruto appeared 'silently' at the prison cell at the beginning of the day.
After Daichi's one-on-one training however came Haruto's self improvement time on his jutsu. He worked hard to push the limits of what was possible with Fire nature chakra and but at present all his attempts felt like bashing his head against a very firm wall.
It wasn't just hard per say, it felt impossible, like scaling an impossibly high cliff free handedly without any support. And Haruo's repeated failures were getting to him, shaking his nerves and confidence in himself, making him wonder if what he was doing was even possible since he barely saw any improvement in himself from one attempt to the other.
So during this time, at Kakashi's suggestion, Haruto began training water walking. Of course, he could breeze through water walking like it was nobody's business given Megumin's mission's chakra control reward, but he took his time pretending he could not and was slowly improving.
After all, a jump too steep in skill would only rouse Danzo's suspicion.
So Haruto often fell into the water, splashing around aimlessly inside it while floating along the banks of the pond in training ground seven making Naruto laugh at him on purpose.
After that came the hardest part of his day yet, training with Unohana.
Unohana had mostly gotten used to how Haruto fought, making it exponentially more and more difficult for Haruto to come up with any new ways for him to fight against her.
It was during this time that Haruto thought about the task he'd been putting away for a while now.
'Should I summon another character from the roulette deck?'
'I got one more chance to spin the proverbial wheel after completing Megumin's mission… but it seems like a waste to bring another character into the fray when I'm already swamped with work as it is.'
So Haruto decided not to summon another character so soon. He would stash the card for now and come to it when he was more free. Perhaps after Danzo left, for good.
In the meantime, the model training was going fine. Haruto left the model to train overnight on the data that was generated in the morning and found it progressing rather quickly now that he had gotten actually good data.
With only having trained on about three fourth of the data, the accuracy of the model in predicting which letter or number was handwritten by anyone was about eighty percent.
Haruto was sure that in another week, by the end of the three week deadline that Kakashi had given him, the model would be reaching an accuracy rate of ninety percent plus.
The one good thing about all this slogging through out two weeks was that at the rate of about five people per day with Daichi, lesser than the first two days since the cases on the remaining days had started to get more and more complicated, Haruto was about to finish the mission that Unohana had assigned to him.
Haruto looked at the mission panel in his mind's eye and focused on removing the last bit of poison from the prisoner in front of him while making sure he was still alive by the time he finished, Haruto immediately activated his Occlumency at full force.
Almost immediately as Haruto did so, he felt a flood of memories rush into his mind.
The number of memories were so great that for a second Haruto felt like if he hadn't obtained high tier Occlumency from Grindelwald before all this, he would've been overwhelmed by the memories of roughly a thousand years or two and forgotten his own identity.
Carefully sectioning off a part of his mind to store all these memories for later consumption in a more casual setting, Haruto looked at Daichi.
"I secured the poison from him before he died, you should now be able to torture him while keeping him conscious once again."
Daichi looked at the prisoner and then at Haruto before speaking in a bland tone, "You can leave now, what's next isn't suitable for your ears."
Haruto nodded, already used to this type of command that Daichi only used when he was extracting some high class information from his target.
Haruto left the Interrogation and Torture department and did his best not to directly go home to consume Unohana's reward and instead went to training ground seven where he practiced working on his own jutsu for a while before practicing water walking.
Haruto fell into the pool several times, cooling himself and his excitement a little bit since the pool during the winter was freezing cold and then he finally bid his farewell to Kakashi and Naruto.
Yet, Haruto still didn't leave to go home, instead he first went to the Research and Development department where he checked on his model which had already begun training on the data that had been gathered today on its own.
Only once all that was done did Haruto go back to his home.
Once home, Haruto cooked a delicious bowl of ramen for himself which he quickly slurped while reading the textbook to study some tips for advanced chakra control exercises after which he dropped dead on his bed.
"Quick! Haruto!! Is there any explosion related knowledge in Unohana-san's memories!!!" Megumin instantly ordered Haruto as soon as he appeared inside the Template Inventory Space.
Haruto giggled and explained softly, "These memories are only regarding Medical knowledge about the body or soul. No explosions here."
"Aww… really? Not even one?" Megumin asked disappointedly.
And Haruto nodded, "Now, let me be. I want to absorb these memories as soon as possible. I don't think I'll be able to absorb all one or two thousand years of memories at once but I'm sure if I'm fast enough I'll be able to make a dent. Unohana-san, where would you recommend I start from?"
Unohana smiled and answered softly, "I recommend you start from the very beginning since the basics are very important after all."
***
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