Goro Y/N's semblance, heat, is a system where the more he hits something or someone the more heat he generates. This, results in his strength and speed doubling and him hitting harder. However, every time he gets hit or doesn't attack in a fight for an extended amount of time he loses it and returns to a normal athlete's speed and strength. Heat can be cashed in for powerful moves which can deal massive damage and is always guaranteed to hit. However, he loses heat and goes back to the normal speed.

He has 4 styles he switched from, which allows him for a wide variety of attacks and heat actions.

Thug

Often seen with a blue aura, a fluid and balanced combination of punches, high kicks, elbow strikes, and counters, based on street fighting, with liberal use of sneak attacks and other dishonest forms of fighting. This style may represent Y/N's resourcefulness in battle despite his lack of formal martial arts training, having an unconventionally firm, low southpaw horse stance (an exact mirror of Bruce Lee's stance) in combination with fluid and acrobatic strikes.

Slugger

Often seen with a yellow Aura, a Power style that emphasizes Majima's ability to effectively wield melee weapons, primarily baseball bats, in surprisingly skillful fashion. There are several different styles of weapons when utilizing Slugger, aside from a baseball bat, including long poles, kali sticks, tonfa, nunchaku, and swords. This style taps into Y/N's natural aptitude for weaponry, best shown when he wields the bat in a unique manner that transforms what would otherwise be a simple blunt instrument into a tool with which he performs graceful yet powerful weapon strikes.

Breaker

Often seen with a pink aura, Speed style that makes use of dancing skills and Y/N's agility, combining elements from capoeira with breakdancing. This style can be seen as representing Y/N's loose combat prowess and unpredictability when fighting. Attacks in Breaker style are mainly high-momentum spinning maneuvers typical of power moves in dancing, with a near-exclusive focus on kicking and leg sweeping to attack surrounding enemies. The majority of Y/N's moves are taken directly from breakdancing, using hand standing floorwork maneuvers such as stabs, windmills, 6-steps, etc. 

Mad Dog

Often seen as the ultimate technique, with a purple aura, Y/N uses his famed Demonfire dagger as the default weapon, and relies on bold acrobatic slashes and kicks in a style built around relentless aggression. Majima often throws all of his weight into various lunging strikes and stabs, staying low to the ground and continuously moving and spinning. Unique to this style is "Mad Dog's Darkness, which applies certain passive abilities from other styles to Mad Dog.

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Hey guys, this is all the info that didn't make it into the first introduction chapter! I am currently working on chapter 1, and would like to let you all know I'm still alive and not leaving the story til it's finished. Also, this story will have no love interest unfortunately because of reasons. Those reasons being, it'll help more in his descent to near insanity and there's no one exactly for him