Ryu's trip to the Mortal Plane didn't last very long, nor did he involve himself too deeply. He left what remained of the Tor some guidance and allowed them to 'stumble' into certain fortuitous encounters. After observing their character, he picked out a few he thought would be somewhat better than the others and pushed them to become better versions of themselves before leaving contentedly, feeling that he had done his part.
It was quite an interesting experience, if Ryu was honest with himself. The act of playing God left him with an odd feeling, and the realization that just a few benign actions on his part could change the trajectory of several generations in this place was a baffling thing to wrap his mind around.
There was something decidedly beautiful about it all.