Having successfully survived the killing school life in OTS, you strut towards the exit and shove open the doors with a mighty thrust of your arms. You close your eyes, step forward, and inhale through your nose, expecting a rush of gasoline fumes and cigarette smoke through your nostrils. But instead, the scent is rather stale. You open your eyes and notice that now you're in the abandoned Yureyu building. You look behind you to see if you can return through the door you came in, but it's gone.
Upupupupu! That silly dichromatic bear is at it again. He calls everyone to the ground floor for a special announcement. Four other members file into the room with you, and they're all familiar faces. You, Dan, Ikaru, Kuro, and Inuki stare at the chuckling bear as he explains that a second killing game is about to begin. The rules from the first apply, only this time, you have bracelets with forbidden actions! That's silly, you think. The bracelets aren't even on you yet and there's no way you'd consent to receiving one. You look down and a black and red band is latched around your wrist and you sigh, accepting that things just don't make sense anymore.
Seeing only the best in each other, you all reveal your forbidden actions to each other. You tell them that your forbidden actions restricts you from killing anyone directly (effectively, the only way you can kill someone is to trip their forbidden action). Inuki informs everyone that his forbidden action prevents him from reciting any memes that reached their peak in 2011 or later. Kuro then carefully reveals that xyr forbidden action is to speak a sentence longer than 9 words. Ikaru steps forward with a rare amount of self-confidence and discloses that his forbidden action is to express any self-depricative thoughts. Finally, Dan approaches and informs you all that his forbidden action is to express even the slightest bit of sarcasm. Having all learned each others' forbidden actions, you all agree to search for a way out rather than killing. Except for you. You've been through this once and there's no way in hell you're waiting around here. Episode 16 is just around the corner and the people want more.
You don't have much time to win this, so you decide that you must set off everyone's forbidden actions in a chain reaction rather than individually. You have the choice of killing all 4, or choosing 1 that you would like to leave with you while killing the remaining 3. Explain to me your chain reaction and what you do.