You and the rest of the taskforce are playing among us, for fun. It was you, L, Light, Matsuda, Aizawa, Misa, Near, Mello, Soichiro.
The game started and your characters landed on the map, there's two imposters, you started walking around, doing your tasks as a crewmate (edit if you want to be imposter.) until Light called an emergency meeting, all characters teleporting to the emergency table on the screen.
In game chat:
Light (user:spongebob) : I saw L vent
L (user: cake) : That's a lie.
Matsuda (user: pookie) : it literally can't be L?? like he's the most trustworthy person
Light: just because he's on the taskforce and trustworthy doesn't mean he can't be the imposter ingame u dumbass
Misa (user: i love light) : if Light says it's L, I'm voting L!
Near (user: puzzle piece:3) : Aizawa is being suspiciously quiet rn
Mello (user: CHOCOLATEEE) : u dumbass bitches the imposter is clearly Light.
Light: proof??