Wait, the Singularity is sentient? Or is it in a more instinctual manner? That was a whole avenue he had never even explored. Magic as a sentient.....creation? It boggled his mind honestly. So to go home, we need to modify the Singularity?

He wasn't staying here. He had absolutely no intention of getting comfortable. He had a kingdom to get back too, and it would only wait so long. My guess would be a strong emotional connection or moment on behalf of whatever individual left the ...thread. But it could also easily be something on your end. Sorry, I know I'm not much help.