Ok so my current oppinion:
Power Nullification (Any power used on him even if it works, will break and will never be usable again, extends to any type of physical attack as well).
Negation Type or even
Negation Type could work (Cannot be reached by skills or attacks he does not recognize, furthermore he can also dismiss any buff or defensive based skill as long as he does not recognize the buff). I believe Subjective Immunity applies just fine due to how it works, where you he can just consider anything as fictional as long as he doesn't recognize it.
Adaptation and
Reactive Evolution (Even if he does recognize an ability or if the ability forces recognition like styles, he cannot be hurt or affected by the same ability twice). @Tri yes this is the case, as we saw that even Medaka's attack which used a style didn't work on him a second time, and styles force recognition.
Resistance Negation (Could nullify even the strongest of minuses all of which resists powerful power nullification abilities).