Light! Intense light, nearly engulfing Orell's entire world!
Orell's ability indeed required perception to confirm before activation, and his most frequently used and most practical perception... was vision.
This point, Orell finally realized the moment he entered the dim theater and stepped onto the stage!
Having not realized it beforehand, naturally, he could not have prepared a strategy in advance! And in fact, because he did not anticipate this, he also had one teammate who was just randomly chosen, and that teammate had carelessly died earlier.
Only now did he recognize, he completely wasted an important teammate position, how critical a complementary assistant was, he was actually very clear about that! Just, he hadn't noticed it! If he had noticed it, then he wouldn't be in the current predicament!
Orell simply assumed, took it for granted, that being able to see everything around him was normal, without ever contemplating as to why this was.