KillAllTitans logged in. (Eren)
Mikasa logged in.
ArminNotAGirl logged in.

ArminNotAGirl: On that day....humanity received a grim reminder...

Mikasa: Armin, stop talking to yourself.

KillAllTitans: The Wall has been breached!! Prepare for battle!!

Mikasa: Eren, wait. I don't think those are Tita -

KillAllTitans: KILLL AAAALLLL TIIITTAAANNSS...huh?!! Wait a minute?!!

ArminNotAGirl: That's a....TRAIN!!?

Chooo chooooo....

BOOOOMMM!!!

KillAllTitans, Mikasa, and ArminNotAGirl lost connection.

Meanwhile...

Levi: What the hell?!!

LoveAllTitans: Captain Levi, log out now!! Something different has crashed the Wall!! It ain't a Titan!

Levi: What do you mean, four eyes?!

ErwinBrowSmith: Let's go Levi, we'll talk about Eren later.

Levi: Tsk, what a pain...

Levi, LoveAllTitans, and ErwinBrowSmith logged out.

Somewhere...

Annie: ....Betholdt...

Bertalldt: ...It wasn't me, I swear!!

Reindeer: ...and it's true...cause I'm holding on to yo - hey!!

Annie: (takes Reiner's headphone off) Let's go.

Many, many hours later....
(Summary: AoT casts meet KoIF cast, Armin helped to clear some misunderstandings, language, and stuff. The rest is up to you 💕...)

New chatroom...

KillAllKabanes logged in. (Ikoma)
Mumei logged in.
Ayame logged in.
Kurusamurai logged in.
Fatakami logged in.
Kajikawaii logged in.

KillAllKabanes: So sorry guys, our train went full throttle...

KillAllTitans: At least the Internet is still on, anyway...I'm Eren. ☺

KillAllKabanes: I'm Ikoma ☺(about to shake hands when...)

Mumei: KIIIIICCCKKK!!

KillAllTitans: OOOOUUUCHHH...aaahhh...my....(got kicked in his "sensitive spot".)

KillAllKabanes: Mumei!!?

Mumei: Sniff sniff...Ikoma, watch out. I don't like the aura of that Eren guy.

Mikasa: Eren!!? Grggghhh (takes her blades out.) SHIIING!!

ArminNotAGirl: Wait Mikasa!!?

Mumei: Ohhh...another coward ehhhh...(prepares for battle)

Mikasa: What?!!

Mumei: Provoking me to fight either means you're just dumb or you're just a coward.

Mikasa: .....BRING IT ON!

ArminNotAGirl: Nooo Mika -

ErwinBrowSmith: Let them go, Armin.

ArminNotAGirl: But Commander -

Mikasa and Mumei logged out. To fight somewhere....

----------

Ayame: Everyone, please stay inside the train!

Fatakami: But princess!!!

Kurusamurai: She's right. We need to stay here for now. We don't know who those foreigners are or what they're capable of.

Fatakami: ....Ikoma-kun....

Kajikawaii: Takami...let's just listen to some Sawano OSTs to pass the time...ummm...

Fatakami: ....good luck Ikoma, Mumei....

Ayame, Kurusamurai, Fatakami, and Kajikawaii all moved to another chatroom...

-------

Levi, Annie, and the others logged out, not wanting to be involved...

-------

KillAllTitans: Damn....that girl....I'LL SHOW HER WHO SHE JUST MESSED WITH!!

KillAllKabanes: (Aims his nail gun.) Eren, don't attack her, please, it's complicated...

KillAllTitans: OUUTTTA MY WAY! DON'T GIVE ME A REASON TO FIGHT YOU -

NotAHorse logged in.

NotAHorse: EREEEN, WHAT ARE YOU DOING!!! -

KillAllTitans: Horseface Jean?!!

NotAHorse: Fuck you. Whatever!! Eren, you don't know who you're messing with!!

KillAllTitans: Huh?!!

NotAHorse: They're the Kabaneri. KABANERI OF THE IRON FORTRESS!!

KillAllTitans: !! You mean....the "AoT clone" you're saying?!

KillAllKabanes: Clone?!! Geezz, can't people stop comparing...WE HAVE GREATER POTENTIAL THAN THAT!!

NotAHorse: Yeah, and I heard that they were partially the reason why our Season 2 got delayed -

KillAllKabanes: ENOUGH ALREADY!! DON'T BLAME US, BLAME THE GODDAMN COMPANIES WHO PROBABLY HAD VERY GOOD REASONS TO PUT US FIRST -

KillAllTitans: ....copycats....I. WILL. KILL ALL KABANERIS!!!!

KillAllKabanes: Sigh...a biased horseface, an angry kid, what a weird world...no choice...BRING IT ON!!!

KillAllTitans and KillAllKabanes logged out.

NotAHorse: Shit. Eren has another trigger...

ArminNotAGirl: I'm a failure....

LoveAllTitans: Teehee, things are getting exciting....LET THE SHOWDOWN BEGIN!!!

-------

A/N: Feel free to request any scenario. And better usernames in case you have them in mind. ☺

Also, check out the next chapters for more fun (hopefully)

Note: I AM A REFEREE HERE. I don't take sides as much as possible (I LOVE BOTH EQUALLY) and I do not aim to offend anyone - all this is just crack, jokes, and funny stuffs. Period.