Katsuki: shit i-its no use he's too fucking tough!
Katsuki kept dodging while the shadow was laughing like a maniac he used the smoke the guy fired through his rocket and hid
Katsuki: can't believe I'm gonna die in such a shitty way... I guess this is what i deserve
Then a mysterious light came and katsuki heard a voice
(?): don't give up! Kacchan!
The voice was cheering for him and... He looked like IZUKU!?
Katsuki: the hell are ya doing here dumbass!
Izuku: I'm trying to help!
Suddenly katsuki felt a strong surge of deja vu from this situation
Katsuki: just leave!... This fight is my own idiot!... I fucking deserved this for what i did dammit! I-
Izuku suddenly did something no one would expect. He slapped katsuki
Izuku: since when did you become tokoyami! That's right you did something wrong! But sulking around isn't gonna do something idiot!
Katsuki tried to retort but he knew he had to listen...
Izuku: I'm NOT finished dammit! For once in your goddamm life listen to me and accept my help!
Katsuki was about to say something until he heard a noise and quickly dodged with izuku
Izuku: KACCHAN! His weakness are his knee caps!
Katsuki: how the hell did you fucking know!?
Izuku: u-uh instinct i g-guess!?
Katsuki hit the robot in the knee and the robot couldn't move while izuku came and began dismantling the robot
After that...
Shadow katsuki: just go! i-i don't need anyone!
Katsuki: SHUDDUP! You always fucking insist that you can do anything on your own! But we don't have to be cuz im you and you're me dammit
The shadow was shocked then smiled and disappeared and suddenly katsuki felt like a huge weight was lifted from his shoulder
Extra ...
Katsuki: yo deku! How the fuck did you even get here?
Izuku: w-well uhmm!
Earlier
Izuku: im here! What is the emergency!
Leon: im glad you're here (explains the situation) and that's how you can hel-
Izuku: WAIT WHAT!? (whispering) you know i can't sleep with kacchan right?!
Leon: well you don't have a choice here buddy!
Izuku: f-fine but let's make it quick!
Leon: sure! (he then used his quirk and made izuku fell asleep next to katsuki)