obey me · seven deadly sins · demon brothers · little sister · family dynamics · harem · supernatural · chaotic · protective · anime
A thunderous crack splits the night, rattling the windows of the House of Lamentation. Seven demon brothers, their true forms unveiled, crash into their little sister’s bedroom. She’s twelve, sobbing into her hands on the bed. As they close in, the truth unfolds: crimson eyes glint through tears, curved horns pierce her forehead, and a slender demon tail twitches behind her. The air grows still as leathery wings unfurl from her back. Satan’s composure fractures, his voice sharp with shock: “How and when?!?” Leviathan stares, echoing faintly, “How?” A painful, premature mutation has awakened.