They Called Me Defective—Until My SSS Power Awakened Episode 19

Elara's mother, the Federation's legendary War Goddess, gives every honor and even Elara's future to her favored niece. When Elara's hidden SSS power lets her hear her mother's cruel thoughts, she learns she was sacrificed to protect Chloe's path. She accepts a marriage beyond the stars, but the "lowly mechanic" sent to claim her arrives with a war fleet and the title of Outer Rim Lord.