[@vancexentan]

In the hider below, changes are marked with bold within the quotes.

I think this solves the Quirk problem good enough. 

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[center][Hider=The Brawn CS Changes][quote][b][h3]-COMBAT WILLPOWER-[/h3][/b]
Keiko mostly runs off of commands from Chikako. If she says something, he does it without question. He almost never hesitates, though children are a weakness of his. Some part of his remaining mind tries to avoid killing kids whenever he can. This can be overridden by Chikako with enough effort, probably. [b]Upon activation of his Quirk, he loses any hesitation he has for using violence: He won't hesitate in his assaults on groups of mooks and has much better focus against a more powerful one on one opponent.[/b][/quote]

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[quote][b][h3]-REACTION SPEED-[/h3][/b]
Keiko's reaction speed is reasonable. He follows movement well and can catch a physical attack from an opponent of average ability when compared to himself. If someone was to draw a weapon directly in front of him, he'd be able to deliver a punch before they were properly wielding it: Depending on distance he may be able to dodge bullets if there's cover nearby. [b]He loses area awareness when using his Quirk: Instead focusing on the defeat of his current target. This causes sneak attacks to be more effective on Keiko but whoever he's targeting will find themselves being blocked and countered more often due to his deepened focus on combat.[/b][/quote]

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[quote][b][h3]-ABILITY OF QUIRK-[/h3][/b]
[b]Enhances physical capabilities while raising the aggressiveness of the user. Causes the user's bites to infect victims, causing damage while also sending them into a frenzy.[/b][/quote]

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[quote][b][h3]-QUALITIES OF QUIRK-[/h3][/b]
Keiko can release the foamy substance from his mouth at any time, but was raised to restrain from doing so almost entirely. It usually only happens during spouts of anger or at Chikako's command, but also activates at the fear of death. [b]While being released, Keiko gains increased general physical capabilities and an increase in his tendency for violence: He narrows his focus on an opponent or closed-in group and ignores mostly everything else.[/b]

Keiko can bite while Rabid Rabies is activated to infect people with his quirk and cause intense burning pain: After a period of time based on the victim's endurance, they will become rabid and violent. Bites from these individuals will also spread Rabid Rabies. [b]This is not a permanent state.[/b][/quote]

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[quote][b][h3]-STRENGTHS OF QUIRK-[/h3][/b]
[b]Keiko becomes a physical monster and can wreck face in close combat. His deep focus on singular opponents or being able to be sicced on groups makes him a great defense buster or distraction when less physically inclined Villains can't handle the situation. His bite can also turn enemies against one-another, causing a chain reaction of Rabid Rabies if not checked by his opponents that could leave them in utter shambles.[/b][/quote]

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[quote][b][h3]-WEAKNESSES OF QUIRK-[/h3][/b]
[b]Rabid Rabies reduces the user's stamina more than normal fighting would: While his damage potential is higher, he definitely tires easier in this state if going through a full brawl. His focus on certain opponents also leaves him heavily open to sneak attacks without support, that can cause him to be cornered by groups of intelligent heroes.[/b]
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[quote][b][h3]-PERSONALITY-[/h3][/b]
Keiko is kind of a zombie. he speaks slow, often in a confused or simplistic nature. He's not a bad person; Actually, he's quite nice. It's a huge contrast with his sudden will to beat someone to death for Chikako at a moment's notice. He tries to not step on any toes and tends to just listen to commands of his superiors as it's easier than angering people.

While he's seemingly too friendly to be a villain, it all goes out the window with his Quirk. When Rabid Rabies is active, he screams insanity and [b]doesn't regard the enemy casualties as much.[/b] He'll beat the hell out of someone, and yell about how much he loves doing it. It's sort of unnerving. Chikako finds it charming in the "leaving everything as a blood puddle" kind of way. [/quote][/Hider]

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EDIT: Accidentally left a very minor personality edit out. Fixed now tho.