1) Does Kizaru use a devil fruit (aka akuma no mi)?
in my opinion… yes!
2) Type of this devil fruit?
in my opinion it could be a logia (or rogia) fruit… because bullets cannot hit him, and they pass trough his head... like Van Ouger's bullets against Ace, do you remember?
3) Type of logia?
in my opinion…
- Kizaru just makes a kick and a groove explodes in a burning light...
- in the kick, we can see: a light spark under Kizaru's foot... plus, foot becomes white... plus, in the small picture in the corner, we can see something like a bright flash...
- Kizaru is "yellow monkey"; Aokiji in blue, and his power is ice (blue is a color can rapresent ice...) Kizaru is yellow...
conclusion: logia of the… LIGHT!!!
no light = lightning (like Enel), simply light, the opposite of darkness…
then...
Kizaru has a logia devil fruit of the light
what about?!?