MHA: Hive Mind

Quirks are superpowers, beginning from a long time ago and persists even until now to the point that 80% of the population already has Quirks. The Quirk Singularity Theory states that as time goes by, Quirks would continue to grow stronger and stronger, more precise and detailed, and with that comes danger until finally a doomsday event would come where a truly monstrous Quirk couldn't be controlled. Shinso Hitoshi was a boy in the present with a Quirk that allows him to brainwash others if they replied to him. DOOMQ MC-875 was a boy from the future with a Quirk that allowed him to control the minds of others using a Sub-Quirk of controlling liquids as a way to penetrate directly to a Human's brain, specifically the ones the secrete chemicals, cerebrospinal fluid and many others to take full control of one or more people's brain. In a twist of manic, boredom induced, power-high and hate for his current modern time MC-875 brainwashed another fellow DOOMQ that has power over time and sent his consciousness and quirk way back into the past. Way back into the present. Way back into Shinso Hitoshi's brain, hijacking him and just casually taking over his existence. Not the weirdest situation he's gotten himself into.