I usually dont post stuff about hitboxes, but this is my limit lol...
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He's kicking air and it counts. I feel that this is mugen, so any talk of "compatibility" is ridiculous. The character should be the character, not a square.
Dont get me wrong I do really like the guard stances. Just that he's lifting his leg so you shouldn't be able to hit air. Even from the tip of his knee down this shouldn't connect. CLK pokes shouldn't work as well against him as other characters. They just shouldn't.