@DMUA, hah, apparently I was able to finish him in a relative short time. Ok, so Kazuma is a one-man army, that in my list is Lv 7-8, brawler style is pankration and sambo, that makes him easy to knock down, disarm and trap his enemies (he also more accurate now, not quite that in character from what I've see, but that +10 to parry was luring), beast style is moai thai as, well, he punches pretty hard (it does not say nothing about he using objects around, although no thing stop him from using heavy objects as weapon, albeit with a penalty), and rush style is boxing due enhanced speed (plus bonus to counters) and kempo to typical barrage of strikes; shotokan is basically was kind for convenience even if his style does not quite fit, but its a bonus to attack and allows him to buy the weapon module that allows him to use a katana.
Heat mode is kind of gamey, is basically Kazuma going all out and perform what I like to call "cheap ki techs", and that in my book is using Fatigue points: with the combination of Tireless advantage, Use of Necessary Energy and Elimination of Penalties allows him to spent Fatigue points to obtain bonuses more often and with little consequences. But if that is not enough, I gave him the To the Limit advantage, that increases his abilities when he is close to die, and Improvised Combat Techniques to more variable heat actions.
EDIT: Forget to correct few things, but I take the time to make notable changes: he is slightly slower now and now have sambo in advanced degree, but have the Improvised Weapon Module, so now it can use bykes and such as weapons with a minor penalty.