Patience turns into damage. Bruiser lets Chuma Yakumaru load power into a single arm or leg and swing it as one heavy strike, and the longer he spends winding up, the harder the eventual hit lands. Trigger changes the math entirely, spreading the effect across his whole frame.
Bruiser, written in Japanese as Dageki, is the Quirk belonging to Chuma Yakumaru. It falls under the Transformation classification and works at close range.
The power comes out of My Hero Academia: Vigilantes, appearing in Chapter 6 of that manga and in Episode 4 of its anime adaptation. Wiki categories list it under Vigilantes original Quirks and villain Quirks.
The Quirk concentrates power into one of the user's limbs, turning it into a delivery system for a single heavy blow. Charging matters: the longer the wind-up runs, the more force the resulting strike carries.
Trigger overhauls the scope of it. Under that drug's influence, the enhancement stops being limited to one limb and floods Chuma's entire body instead.

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Bruiser is a Quirk belonging to Chuma Yakumaru, a villain from the My Hero Academia: Vigilantes spinoff. It is a Transformation type Quirk that works at close range.
Bruiser lets Chuma Yakumaru concentrate power into one arm or leg for a single heavy strike, and the longer he charges it, the harder the resulting blow lands.
Trigger changes Bruiser significantly, spreading the strength boost across Chuma Yakumaru's entire body instead of limiting it to a single charged limb.
Bruiser debuted in Chapter 6 of the Vigilantes manga and in Episode 4 of its anime adaptation.
Chuma Yakumaru is the only recorded user of Bruiser, appearing as a villain in the Vigilantes side story.
Looking for more on Bruiser? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.
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