It hadn't impressed him much when Ogoro had dealt with the level 1 Sam during their many duels since the assassin was already skilled on Earth.
Like others, Kai had sent him and his sister to do his dirty work quite a few times. Although it hadn't necessarily been for assassination purposes.
The shrewd man could have used Ogoro as a manager, but the assassin wasn't allowed to ascend past the third floor. Kai had expected him to run out of money soon, but the assassin had been smart enough to come up with a way to earn TPs.
Duels involving warrior classes—not mages and archers—were held every so often early in the morning or later after CDs. If the one who challenged Ogoro won, he/she would be rewarded with the memory bead. But Ogoro has always won and took the soul cores from the losers.
He had hoped it would serve as training for Sam and invested quite a bit of soul cores in those duels.