Seijo ga Kuru kara "Kimi o Aisuru koto wa Nai" to Iwareta node Okazari Ouhi ni Tesshiteitara, Seijo ga 5-sai datta node Zenryoku de Aishimasu!!

Edeline enters her engagement to King Yuri with no illusions about where she stands. Bound by tradition to wed the Saint destined for the kingdom, the king bluntly declares that he will never love her—the Saint's arrival draws near. Rather than mourn a heart she was never promised, Edeline resolves to carry out her duties with quiet grace as a purely ornamental queen, content to remain in the background of her own marriage. Yet when the long-awaited summoning finally takes place, the person who appears shatters every expectation: not a grown woman, but a five-year-old girl named Ai—an abused, trembling child clutching the kingdom's most sacred title in her small hands. What unfolds is neither rivalry nor court intrigue, but something far more tender. King Yuri and Edeline take the frightened little girl into their care, adopting her and nurturing her with the boundless affection she has never known. Slowly, this unlikely trio blossoms into a true family—one whose love may grow into the kingdom's greatest power. A warm, heart-soothing fantasy of familial devotion and one beloved child's growth begins here.