Husband, I'm OK With a Divorce, but I Want to Continue My Slow Life! "The Despised Ability Was More Versatile Than the Saint's"

Ruby Rose Delphire, the first princess of the Belheim Kingdom, had been confined to a tower for eight years since she was declared dead after receiving the heretical Heavenly Star called Poison User. Her family feared her ability to manipulate poison and kept her hidden. When summoned by her father the King for an evening banquet, Ruby hoped for a family reunion. Instead, she was coldly informed she would marry into the Langley Empire in place of her younger sister Aquamarine. The King, Queen Deborah, and Aquamarine dismissed her as a monster, and Ruby returned to her tower. There she lived with Poison Rats, the only creatures that could bypass the barrier and bring her food. She accepted her fate, seeing the marriage as a chance to be useful and explore a new world.

After a week, Ruby departed for the Langley Empire disguised as Aquamarine, wearing a blonde wig and carrying only a small bag. She arrived after a month-long journey, greeted by a crowd. As she stepped out of the carriage, her wig caught on the ceiling and fell off, revealing her green hair. Emperor Theodore immediately saw she was not the real princess and demanded to know who she was. Ruby confessed her identity and explained she was the supposedly dead older sister sent because of her Poison User ability. Theodore expressed extreme disappointment, saying he wanted the Saintess and considered Ruby unnecessary. He ordered her to stay at a detached palace and declared he would not treat her as his wife.

Ruby was taken to a small but clean house behind the Imperial Palace. She was assigned a maid named Emma, who was forced into the role after the other maid transferred away. Ruby was delighted by her new surroundings, which were far better than the tower. She made friends with the locals, including the Poison Rats she brought from Belheim. She explored the forest behind the palace, drawn by a pond. While walking, she saw two birds fighting; one fell wounded into the poisoned pond. Ruby, moved by compassion, felt an incantation surface in her mind. She used her Poison User ability to purify the entire pond, drawing out the poison in a tornado. The water became clear, and she rescued the bird, a chick covered in blue blood. She and her rat Michael took the chick back to the detached palace, nursed it to health, and kept it warm. The chick soon regained strength and refused to leave, becoming attached to Ruby. Ruby sensed the bird wanted to become her creature under her care, confirming it was also a poisonous animal. She gladly accepted and named the chick Bla…

Throughout this period, Ruby maintained a positive attitude, grateful for the freedom and kindness shown to her by the land, despite the emperor’s rejection and her family’s betrayal. She demonstrated her ability to control and purify poison, which she had never fully understood before. Her actions saved the bird and hinted at unknown depths of her power. She continued to live peacefully in the detached palace, bonding with Emma, who gradually warmed to her. Ruby looked forward to learning more about the Langley Empire and her own abilities, even as her status as an unwanted substitute remained uncertain. She resolved to make the best of her situation and prove herself useful, though the future of her relationship with Emperor Theodore and the empire itself was yet to unfold.