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Within The Underworld, a large throne made of bones erected in the middle of a gigantic and near endless castle. While in the outside of such castle, enormous Undead wandered about, fighting, devouring one another's souls, and living in this endless dark world, their Queen sat down leisurely atop her throne made of bones. She looked into several system-like windows in front of her, while a portal leading to a pocket dimension where she kept her treasures quickly closed.
Seconds ago, she had taken a few of the items kept inside within such an endless treasury she had kept growing since time immemorial. She never thought she would ever have any use for so many items, so she freely handled them over to her favorite Apostle of Death, Maria, and her allies. Although she was smiling now, a slight amount of annoyance was clear in her flawless, youthful face.
Check "The Protagnist's Sister Is Actually the Strongest"!