YEAR 20XX

Everyone was running away from the huge mutant demon. Its appearance is 15 meters tall with triple heads, dark red skin, giant human-like hands, short arms, and hands each triple head. "EMERGENCY EVACUATION ALERT!! A DEMON HAS APPEARED! EVACUATE THE AREA IMMEDIATELY!" They scream in panic as they dash to find a safe place to hide. The triple-headed mutant demon grabs the deer with its fingers and puts it into its mouth.

As the mutant demon grabbed a person, then something else... A yellow light-speed trail aura hits the demon's jaw, SNATCH! The living thing is Keiji the White Rooster! "Every single one of you... That's enough of you demons having your way." Keiji said with a menacing look on his face. The person in the background lay on the roof building fortunately saved by Keiji. "Is going down!!" Keiji's beak opens, showing a powerful hyperbeam charging to increase the size of the light energy aimed at the mutant demon.

—THIS IS THE STORY OF HOW ONE ROOSTER SAVED HUMANITY—

One year ago. A peaceful Japanese town in the morning. In the chicken coop, Keiji and his ex-hen, Elizabeth, her appearance is a black hen with green eyes and earrings. They slept together while Elizabeth lay under her eggs to protect her from predators.

After asleep, Keiji got out of the chicken coop behind Elizabeth. "Kruck?" Elizabeth walked behind Keiji, wondering if he leaving her alone or something. "You're leaving!?" Elizabeth said with tears in her eyes. "I was born to wander. Peace and quiet doesn't suit me—" Keiji replied while closing his eyes before leaving her. "No." He starts walking outside, but he's never listened to Elizabeth's words. "You were just sleeping with me?!" Elizabeth replied with a sad tone as Keiji was ready to go out. "I just gave in to my animal instincts." Keiji added.

As Keiji walked on the small streets in the neighborhood of Japan. He heard buzzing sounds from fly insect. Keiji seized the small rock, threw it, and plopped it onto the ground.