The Mythical One ( Herobrine minecraft fanfic)

There is this girl named Diamond with her boyfriend Felix. She has 2 friends: Rose and Clara. But once Diamonds mother dies by a unknown serial killer, she goes on the adventure to find the one and only Herobrine. She knew it was him because when her mom screams in fear and the killer looks at Diamond with his white glowing eyes. She decides to go after him. The only way to kill him is by cutting his neck or cutting his head. Will they survive? Or will they die?