MHA: Anti-Hero Decepticon Heralds

You might expect quadruplet brothers with extraordinary quirks to become great heroes. However, it's shocking when those you trust believe the biggest lie. During Battle Training, Kai Kobayashi, the youngest, was falsely accused of being suspicious due to his reserved nature. Despite his protests, most UA teachers, 1A students, and even All Might tried to capture him. His brothers stood by him, defending him, which sparked a fierce fight. They fought off opponents, even defeating pros, but were ultimately overwhelmed, seriously injured, and arrested for defending an innocent. While restrained, they were beaten by corrupt cops. As they were taken away, Hiroshi, the oldest, warned they'd pay for calling fakes, before being transported to Tartarus, given minimal care to keep them alive.

AN: This MHA universe will be very different from the very beginning. The quadruplets are friends with Izuku from the very beginning, so he isn't a wimp. Bakugo is angrier because he doesn't beat up Izuku, and he is constantly humiliated and inadvertently shown up by the quadruplets.