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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.

Ka(tsuki)-cchan
"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 12, 2017
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3
a Japanese word means a bitch slut who got fucked up in the ass every time she meets a boy
1- whoa look at that girl she's such a kacchan
by dark king rayeligh November 25, 2016
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4
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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6
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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7
a person who is an asshole and is disrespective to everyone and calls they're mother a hag, and thinks he's the main character in everything and is very gay for a red haired soft boi
Roy: I heard Jack call his mother a hag!
Jasmine: *sigh* he's such a kacchan...
Jack: wtf?
by blue amber September 05, 2019
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