Mina POV

My classmates and I were talking, school being over for the day, when Midoryia burst through the door. "I'm back!" He announced happily. I was about to greet him, when three others followed him inside. A sea-green dragon, a tall male with a crimson sweater, and a female with a grey sweatshirt. The dragon froze, their eyes flickering over us. "Well, fuck..." I heard the male whisper. Midoriya beamed. "Guys, I would like to introduce my new friends, Genocide, Selever, and Rasazy!" The dragon looked nervous. The male noticed and nudged them. "C'mon sis, don't be shy!" He said. Suddenly, Aizawa-sensei burst in the door. The three newcomers glanced at each other and slunk into the shadows. "I came to deliver an urgent message," Aizawa-sensei said. "There have been reports of a demon sighting around UA. Be careful." He turned to leave, then paused, seeming to notice three pairs of glowing eyes, two glowing a crimson red, and a heterochromia pair, one eye pink and the other blue. Aizawa-sensei immediately grabbed them in his scarves. They didn't struggle. They looked...oddly calm?

Aizawa POV

I grabbed the demons in my scarves. Surprisingly, they didn't struggle. "Sensei, stop! They aren't demons!" I heard Midoryia shout. The dragon and the male looked at one another with a knowing look. "Well, guess it's no use in hiding it anymore. Geno?" Said the male. The dragon-who I now know is Geno-nodded. They closed their eyes and focused. The male grew sharp horns similar to those of Lucifer herself and small black wings, and Geno's features grew more defined. The spiral markings under her wings turned pink, her wings enlarging and turning black. Her scales turned pink and black, her underbelly resembling a leotard. Her eyes started glowing a deep red and her horns grew a black vine-like thread looping around them. I threw them down and pinned them. My students' faces were one of shock, and in Midoryia's case, betrayal. I didn't even notice the male had escaped my grasp until I heard the click of his heels. I secretly called All Might for backup. Geno threw the male a microphone. "Selever, catch!" She yelled, the male-known as Selever-catching it. "Thanks, sis!" He yelled back. His eyes flashed crimson, and he started singing something (Attack), his voice sounding like a harpsichord. All Might finally arrived with a shotgun. He kneeled and aimed it at Selever. The female I was still holding tried to warn him, but I shook her hard and she shut her mouth. All Might fired the shotgun. Selever fell silent, falling to the ground. Geno looked up, her face turning to one of horror.

Geno POV

I looked up to see the most horrifying sight: Selever collapsed in a pool of his own blood. I heard Rasazy crying out, but it sounded distant. All I could hear was a loud ringing in my ears as I stared in shock at my elder brother's fallen form. Red started creeping into my vision. Someone had DARED to shoot my eldest sibling. They were going to pay with their life if he dies.