@aonokumura replied to your post “Maybe a Satan Flame bath will make the ghoul mold...”:
"Ugh-! Rude! It worked on Impure King infections, so I thought it would help... and should you really be throwing things like that at your age? You might end up throwing out your back instead, ジジイ." After sassing his poor father, he turns to Dennis with a smile. "I made your favorite, chicken alfredo! And garlic bread! How are you feeling?"
"Well, next time say something before you douse everyone in flames! It's rude to scare a doctor who's actively working on a patient like that!!" Although maybe there was some merit in letting Rin handle the infection. They both cured Impure King related illnesses in their own way, but there was no denying that Rin's swifter method was more desirable compared to Shiro's traditional medicines.
It was hard to say though. While he did have some working theories and suspicions on what was plaguing Dennis' hands, Shiro had no confident answers on what this ailment was or how to effectively treat it. He was only treating the symptoms rather than aiming for the cure.
"Um... Numb." Dennis flexes his hands, wiggling all of his digits then stretching them out as far they'll go. Whether or not it helps, he doesn't know, but keeping the blood flowing smoothly has got to do something. He hopes, anyway. "Other than that, fine, I guess. Just really frikkin' scared I'm going to die."
"You're not going to die."