[Okay so Hange's judgement is definitely not off; don't mind them holding on to the fingers and fiddling with them while speaking.]

Beats me!! Did you stick your hand in anything weird today? This week? This month...?

[Hange pokes about the fingers testing the range of motion of the growing stumps and checking all parts to see if there is feeling in it.]

[Okay-- time for the next test. Hange runs off for a second to grab a book from the bedroom before returning to him. Thanks to the time spent with fellow Summer people, they've had a decent amount of success with the "identify disease" power by testing it on people who already know they are sick.]

Okay, let's try this. Don't worry, I'll explain after!

[Hange goes through the steps of the magic, and by all accounts it appears to be working, yet it is showing no signs of disease.]

So. It's not a disease, I can tell you that much? Actually, you're entirely disease-free! Good job, Levi.

[it's something?]