In Vidoro's case. He had been taught from a young age that as a grand duke's son, he should always be mindful of how he acts and never carelessly run around in the mansion or any other place.
And since he was also certainly talented in magic or mana, or whatever call it, he was allowed to take up magic lessons and attend the magic academy instead of swordsmanship. This means he never got any exercise whatsoever in any situation.
And died two months after his thirteenth birthday when this condition reached its final stage and his heart exploded.
Since Vidoro was already twelve and currently showing the third-stage symptoms of the disease. There was only so much time left before his anticipated death, the reason why I was making this young boy with such a weak body do such gruesome training right off the bat.
Now my job is to avoid that. Why?
Because this condition is only inherited by those who have an overbearing amount of mana that their tiny bodies can't control which means that Vidoro might even have even more mana than all the magicians in the magic tower altogether!
So I had two motives, first, get Vidoro to become even stronger than the master of the magic tower without dying.
Second, even if it turns out that I can't return to my original world by dying then there would still be a 2% chance that I could go back with the help of one of Vidoro's spells!
Vidoro had given up trying to get the assignment back from me by now and had stormed off to fetch one of the other two brothers since he couldn't even use magic properly right now without being in pain. Another symptom of the Mana Entrapment disease.
But what he didn't know was that he was only getting more exercise by doing this since Luden was locked in his office doing a bunch of paperwork and had ordered the guards to not allow anyone else in after I had left.
And the only reason I didn't go straight to annoying Avis after being kicked out of Luden's office was that he was currently with Anartis.
The master of the magic tower, Avis's bff, and also Vidoro's greatest and only role model.
Now who would go ask their older brother for help in getting their assignment back from their fake sister? Not Vidoro.
Also, the duke had left for the palace meeting this morning so Vidoro couldn't go to the duke for assistance either.
By the time Vidoro had returned to the garden dejected and defeated.
I was already planted on top of one of the branches of the tree which he would have to run from and to the lake at the bottom of the staircase.
"Come on. We're staying here until you finish those laps." I declared not in the least bit affected by the hateful glare Vidoro was sending my way as I looked over the three-page assignment.
"And I really don't care how late it gets." I added a moment later turning back to Vidoro who only sighed in defeat and looked at the ground feeling an intense wave of frustration rush through him.
Yet he eventually began performing the five laps since there was nothing he could really do about it anymore.
I did feel somewhat bad for doing this to him but that thought didn't last long once I remembered this was for his own good and he would die without it.
Plus this was also a sort of punishment for him for what he did to the real Sovine so I refused to go easy on him.
Though he was already hyperventilating after the first lap...
"I can't do this!" Vidoro wailed and it was pretty clear that he wasn't faking it by how he was already on the floor by now despite all his lessons on how to act as a Grand Duke's son.

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~The String of Fate~ discontinued... Well, continued on another account ??
FantasyA/N: Guys plz, this story is discontinued on this account. ?? So many people are still putting it in their reading lists that I feel bad. I'm rewriting it on another account, the account is @-_-lemme_sleep (I think) I commented on the last chapter...
Chapter 9:
Start from the beginning