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Katsuki Bakugou from Boku no Hero Academia/My Hero Academia, it's his childhood nickname that Izuku Midoriya (still) calls him.

"I'm not gonna be your worthless punching bag Deku forever... Kacchan. I'm... I'm the Deku who always does his best!" - Izuku Midoriya
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by journey저니 June 11, 2017
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Apr 2 Word of the Day
Music so good it could elicit sexual arousal.
The new We Came As Romans albums is chock full of bonerjams.
by lpvitus October 28, 2009
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A hoe that should be way more nicer to izuku

Also he is and angry pomeranian or boom boom boy
Kacchan:I'm bored
Kacchan:I'm going to make deku cry since he is annoying

by Boom Boom Boy's Future wife August 18, 2020
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A nickname provided to the character Bakugou Katsuki from the renowned anime series My Hero Academia.
“Kacchan!” Izuku Midoriya voiced breathlessly as he pleaded for mercy from the explosive boys grasp. Blood streaming down his face; he had tried to convince the boy that a fight wasn’t necesssry but that ultimately failed.
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by Michi Nae February 12, 2019
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a great king or ruler that also goes by Lord Explosion Murder. His boyfriend calls him “explosion boy.” He’s beautiful in his own...explosive way.
Kacchan has said once “LORD EXPLOSION MURDER!”
by kirishima July 16, 2018
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This is a Japanese word meaning Explosion/Loud. It is also the nickname for the Character Katsuki Bakugou from an anime: Boku No Hero Academia (My Hero Academia). Bakugou's quirk is to let him make explosions from the sweat on his hands. His father's quirk is explosion - which is made from his sweat - is very weak as it has no fuel to power it. Bakugou's mother's quirk is glycerin which will be the fuel to Bakugou's quirk: Explosion. Bakugou is a very explosive person and is usually called this nickname by Deku (Izuku Midoriya)
"Kacchan!" Deku exclaimed, "Are you OK?"
Bakugo responds: "I DON'T NEED YOUR HELP DEKU!!!!!!!!"
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by korudied April 04, 2020
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