Well, it appears I've made as much progress as possible with the given information. Regardless, I can confirm some vital information.
Those fully in green have been confirmed. Those in white have not. However, certain pieces of some can be confirmed. For example, the 'never' in Nevermind, and the 'Child' in childish.
However, there's one letter that sticks out like a sore thumb that hasn't been placed yet: a capital K.
I highly doubt there will be a disease that begins with the letter K. In other words, this could only be the first or last name of someone. And the only person that isn't listed so far that fits that criteria is...
Fuyuhiko Kuzuryuu!
Therefore, the two not afflicted with the disease were most likely Toko Fukawa /u/Crispybro and Byakuya Togami.
...there is a bit of an exception, however. Unfortunately, while I'm fairly certain that Twogami had the disease, I can't say for sure until I confirm that the W in Twogami isn't needed elsewhere. For that, I must wait for Peko and Toko's letters. /u/PhiPhichan
