Functioning without a soul?

[Nullflowerblush]

At 1:00, K.O. has his soul consumed by Enid. After that, at 1:21, K.O. follows Enid and requested his soul back, meaning he was able to survive and function without his soul. What exactly would this constitute as, in terms of ability, of course? It's not Resistance to Soul Manipulation, as he was of course susceptible to Soul Absorption, so what is it?

 

[Daddybrawl]

It could be Unconventional Resistance (Can function without a Soul, but is still susceptible to soul-based effects)