DxD: Golden Peerage

[Do you desire to save your race from extinction? if so... accomplish a mission for me and I shall bring your race not only to salvation but also... supremacy!]

Those were the words prompted in the mysterious screen in front of her as blood kept pouring out of her wounds, for Grayfia Lucifuge, a devil in the middle of the civil war against the Old Satan Faction; there could not be more treacherous yet hope-inducing words, it could be a trap, but it could not.

She had the option to choose between 'Yes' and 'No'.

For her who was at the edge of death with a family that needed support and a cause to fight for, there was not much of a choice.

Little did she know, the mission she was tasked to do wouldn't be a simple or common one.

In the faraway multiverse of Helius, one of the most powerful entities in endless existence slumbered atop his myriad treasures when his senses perceived something that shouldn't be possible. Intruders were common; Intruders remaining in his realm this long without perishing... were extremely rare.

Upon appearing before the silver-haired maiden in odd attire, he huffed a breath frightening enough to make the strongest gods flee on the spot, but she remained in place - conflicted, but in place.

"Before you perish, tell me... what is an ant like you doing in my realm? and why are you still alive?" Disbelief was concealed in his mighty voice.

The maid thought a lot about what words had to come out of her lips for her to survive this hurdle, eventually, with her century-worth of experience in romance, she managed to find a fitting answer.

"You're the Primordial Golden Dragon God, Richter-sama, right?" She asked with serenity.

"Sama? I don't know about that... but you're correct. With your foot standing on my treasury realm, do you still dare ask about my identity, Demoness? you haven't-"

"Richter-sama... my name is Grayfia Lucifuge and I'm here to conquer your lonely heart"

"..."