Didn't Nanami Abe also coach Arakawa Shizuka early on in her career? There must be something in the water in Sendai that both Japanese Olympic FS champions have been from there. I recall seeing something that reported that after Hanyu, she didn't really take on any new skaters as coach and really did just embrace being a choreographer.
With Orser, maybe it's his team, maybe it's a massive fluke, maybe it's the athletes that come looking for him. But with Yuna, then Javi, then Yuzu it is clear that he knows how to nurture already-there talent and potential. He knows how to improve upon already great jumps and skaters to make them a whole other level of great (we are called PLANET Hanyu for a reason). It will be interesting to see how his more junior skaters fare.
Regardless, we can all agree that Hanyu is a once in a lifetime kind of athlete and I certainly do feel grateful to have been able to witness everything he has achieved.