[@XmasForYule]
Longinus:

You'll have to use a different telling of the story than the eternal torment one, as otherwise he's ineligible since he straight up doesn't die in that version. This also means you'll have to remove Battle Continuation, but you'd have to remove Battle Continuation either way since "being cursed to keep healing so he's punished forever" isn't how you qualify for that. 

Justify CON. 

MR to C, I'll allow you to argue for B if you're persuasive enough. 

HP recovery does not include the removal of curses, as the removal of curses is the rewriting of human destiny and something on par with the Mystic Eyes of Death Perception.

Keep in mind the instakill option will require a LCK check.

[hr]
Mitsuki: 

Why would the Association care about some crazy guy who's trying to do impossible things? 

If her Origin is awakened she will not be capable of functioning as a human. Her "everything" will be consumed by the Origin. See Lio.

[quote=KnK]Individuals who awakened their Origins would be consumed. This was due to a "personality" being something merely on the magnitude of one hundred years; it would be overwritten by the directional force born from the origin. However, humans (human bodies) who were overwritten by their Origins would acquire great powers.[/quote]

Why is a literal thirteen year old flying to Japan for a fight to the death? 

Explain Witchcraft since there are several kinds. Same for healing. Touko Travel's patented and I wouldn't recommend getting into a lawsuit with Touko.

As stated, you can't have her Origin be awakened and also have her have anything resembling a human mind, so everything except the passive of "high od capacity" has to go. Moreover, it won't be inhuman, it will only be high by human standards.