❝ 𝗕𝗡𝗛𝗔 𝗛𝗘𝗔𝗗𝗖𝗔𝗡𝗢𝗡𝗦 & 𝗜𝗡𝗖𝗢𝗥𝗥𝗘𝗖𝗧𝗦 ❞

━━ 1

"KATSUKI? NO. KACCHAN? YES."

Deku often calls Bakugou as Kacchan since he was a kid because that was a name he could easily pronounce back then and it stuck with him.

Izuku, despite knowing Bakugou's real name, can't pronounce his name.
He will end up stuttering and try his best all day to do so but will fail miserably while Bakugou gives him that exasperated look, so done with him, as he watches Izu struggle before grumbling to the little cinnamon roll to just continue calling him 'Kacchan'

how I imagined this-

Izu: You keep calling out to me like, "dEKu, dEkU,DEKU" do you even remember my real name!?

Baku: Of course I do, shitty nerd..!

Izu: well, what is it then?

Baku: Izuku.

Izu:...correct-

Baku: Of course, I am right! What about you, nerd?

Izu: Of course, I remember your name..! It's ka-katch- katsuch- katsas-katsuch-kacchsuk- katchki-

AN ETERNITY LATER

Izu: Katchisu- Kahsu- Katas-

Baku, losing his braincells: Oi, deku, just- fuck that- keep calling me by that shitty nickname-