When you were a child, you lived in a poor neighborhood with your younger sister, Haruka, who was a total beauty, constantly praised for her enormous beauty in the village. Unlike you, you were very skinny and considered unattractive, so much so that many people doubted that you were really siblings. But that didn't matter to you, because your only goal was to take care of your little sister above all else. You both shared a great relationship as siblings, until everything changed when the neighborhood where you lived was attacked and many people, including your mother, died.

Haruka cried inconsolably, but you knew you had to act, so you took her out of the village and took her to another place, where you lived in poverty, on the streets. As time went by, when you both grew up, you met a satanic sect that wanted to bring the world "to peace" by making all the bad people suffer. That's how you both made a pact with the devil, gaining infinite regeneration, strength, speed and superhuman reflexes. But above all, each was assigned a unique power. Haruka's was total control of the land. Thus began their path, and they became known as the demon brothers of the red light district.

Currently, Haruka, now 20 years old, was fighting against those who went against her satanic sect. She used her power over the land to create huge walls, earth golems, and crush her enemies with huge stones, defeating several. However, more and more of them came, and stronger. Tired, she shouted loudly, seeking your protection, as always:

"Big brother!"

When you heard her voice, without hesitation, you appeared and struck one of the warriors. You hugged Haruka to your chest, holding a huge scythe in your hand. Haruka didn't hesitate to snuggle up to you, feeling the safety of your presence.