Actually, it wasn't the Sexy Jutsu that made the Third decide to guide Obito's training.
After all, what Konoha official couldn't withstand a test like that?
He had deeper reasons.
Obito might have a restless streak, but he wasn't lacking in talent.
And in a sense, Obito was part of his own line of disciples.
Then there was Obito's unusual background...
Taking everything into account, the Third was happy to devote some time and energy to the boy.
Hiruzen slowly rose and stretched with a contented sigh.
"Well, that's the paperwork done. What a tiring day..."
He took off his Hokage Robe.
Dressed in plain black clothes, he headed outside.
The Anbu at the door asked respectfully,
"Lord Hokage, would you like us to accompany you?"
The Third laughed and waved a hand.
"No need. You can go get some rest."
Who would dare attack him in his own village?
Outside the Hokage Building,
the Third spotted Obito loitering nearby with nothing to do.
He smiled and beckoned him over.
"Obito, come along. Grandpa will teach you some Ninjutsu."
Obito jogged over, looking surprised.
"Grandpa Hokage, you finished all that paperwork already?"
"That's amazing!" he said admiringly.
The Third stroked his goatee and smiled.
"Hahaha. That's just a basic skill for a Hokage."
"Come on. Let's go to the Training Ground on the west side of the village."
The Third led Obito toward the Training Ground.
Along the way,
villagers greeted the Third from time to time.
He smiled and answered each one, without a trace of the airs one might expect from a Hokage.
He seemed like any other kindly old man.
Obito muttered under his breath,
"Being Hokage really isn't easy..."
They arrived at the Training Ground.
The Third stood before Obito.
After a moment's thought, he said,