With Uchiha Hikari in Madara Uchiha's care for training, Uchiha Yi didn't need to worry about her future growth. She had a knack for cultivating a "villain."
Besides, Uchiha Yi was curious to see how far she could go. He wasn't afraid she would betray him—or, more precisely, he didn't believe she would betray the Shinobi World. Once she had absorbed his Chakra, betrayal was no longer possible.
Without realizing it, she had already begun to take after him.
It couldn't be helped. Uchiha Yi was far stronger than she was. Calling him a second progenitor of Chakra wouldn't be much of an exaggeration.
If Uchiha Yi hadn't allowed it, she could never have absorbed his Chakra. He was the one who absorbed other people's Chakra. Since when did anyone else get to absorb his?
His Chakra hadn't eroded her, but it would still influence her little by little.
And there was something Uchiha Yi hadn't mentioned: Yachihoko alone gave him a way to influence her.
That Dōjutsu let her absorb his Chakra, but it also let him reverse the flow and absorb hers.
Every Ninjutsu had a weakness.
Yachihoko was formidable. If Uchiha Yi's Chakra hadn't been far stronger than hers, resisting it would have been difficult.
But with strength so far beyond her limits, he could use Yachihoko to influence her in return.
After saying goodbye to Uchiha Hikari and Madara Uchiha, Uchiha Yi returned to Konoha and resumed his plain, monotonous life as Hokage.
It was already Konoha Year 48, which got Uchiha Yi thinking: shouldn't he start having children of his own?
In the original course of events, Sasuke Uchiha and Naruto Uzumaki both seemed to have been born in Konoha Year 48. The other young talents of Konoha seemed to have been born around then,