Yeah. It's length capped basically. He can only extend the blades about 6 ft or so. He can also only use the Invisible Black a few times before he's down for the count. And of course the general impetus of he can't cut things in half at whim and has to gain some damage from fights he goes out on alone.

The other major cap is the same one he has in canon. He only has so much blood in his body and while he can push himself to insanely stupid points, he's eventually going to go down and go down hard when he no longer has enough blood to pump through his veins.

What kind of abilities does Hei have?