Kira's Fate Star quite shocked Ryu.
In truth, Ryu didn't spend a lot of time looking at Fate Stars. However, compared to practically anyone else in the world, he had the absolute easiest time.
Even back when he didn't have a single drop of cultivation, he could use his eyes to peer into Fate, let alone now that he had a Fate and Karma Soul Nature to match it.
However, back during his first life, he had had no interest because his own Fate was so bad. He was always destined to shine brightly for a short span and then fall to his death.
As for the Fates of other people, he never cared to look. Had he… maybe he would have been able to see the plans of the Martial Gods ahead of time and planned accordingly.
In that regard, Ryu's arrogance was his own downfall, and that was something that he had yet to truly grapple with.