spoke

The reaction starts when Tenku wakes up and knocks Ryo/Rekka into the bubble with it. Like a brief flash of them going - "I feel something, but whaaa?"

Then cut to the guys again, full understanding as they notice the light coming down.

Then cut to Shuten, who doesn't understand and comes to the conclusion that he's reacting because he really needs to kick Ryo's butt that badly - Arago showing after he leaves, and he does get it.