There has been only once that he has teleported a couple of metres away from ftg kunai's visible. These are the once on his left, on the cupboard and the next is in front of him. The rest of the times, in the fights he has been in he has always teleported very close to the kunai's. Anyway in every fight he spams kunai's in a small area. If he really has a radius he wouldnt need to spam alot of kunai's because one or maybe two alone should be enough to cover the radius, yet that isnt the case. There might however be a tiny radius but definitely not a big one or else one or 2 kunai's alone should be enough