Sakon and Ukon.
Orochimaru's future direct subordinates, and one of the Sound Four.
They were a pair of naturally conjoined twin brothers who shared one body.
They possessed an extremely rare Kekkei Genkai—
Twin Demon Attack.
It allowed them to break down their body cells and invade an opponent's body, destroying the enemy from within.
Ukon, the older brother, also had a technique called the Parasite Demon Destruction Technique, which used bodily assimilation to launch punches and kicks from any part of the body.
In terms of overall combat power, this Kekkei Genkai was not particularly exceptional.
But what truly mattered was their special physique and cellular fusion ability.
They were the key to Kabuto Yakushi obtaining Ryūchi Cave's Sage Mode in the future!
Kabuto Yakushi had used the Sakon and Ukon brothers' special physiques to transplant their cells.
He had then modified his own body, allowing it to contain the cells of the Sound Four, Kimimaro, Orochimaru, and others.
In the end, he had successfully integrated them, adapted to them, and mastered Sage Mode.
"I actually found them here!"
Guy was overjoyed.
Kabuto had already received formal medical training years ahead of schedule.
His medical ninjutsu had long surpassed his original counterpart at the same point in time, and he was even no weaker than Shizune.
If he could study Sakon and Ukon's body structure and the principles behind their Kekkei Genkai in advance, combining that with Kabuto Yakushi's medical talent and knowledge—
Then perhaps... it really might be possible to create something akin to a "Sage Body" ahead of time.
Guy's heart filled with delight, and a gentle smile appeared on his face.
He stepped forward and carefully untied the restraints.
With gentle movements, he picked up the little two-headed child and placed him on his shoulder.
"Don't