I'm assuming that panel is the one where Mangapanda has him saying '...I can see why the King of Souls.. ..would fall for him.'
Viz says: "I see why.. ..Reio is so obsessed with him."
Original: "...Reio-sama ga horenno mo wakaraa."
The gist of what he's saying is 'I see why lord Spirit King is so obsessed/interested with him', so they're both right.
Parsing it was hard for me, since that nno in horenno was throwing me off. The n there is in katakana though, while the rest of the word is in hiragana, so I'm thinking the extra n sound is just how he talks, then the no is to turn the verb horeru into a noun, so it can be the object for the verb wakaru, to understand. Wakaraa doesn't fit a conjugation I'm familiar with, but putting it in the negative doesn't make sense, so I'm sticking with the positive.