The duchy of Hikarell, the most powerful force of the empire, not inferior to the royal family. Although their power is strong, various dreadful rumors abound due to their secretive nature. One day, sixteen years old Roel, who suddenly became a duchess, finds herself in the darkness… Roel, like a dandelion seed, is unfamiliar to her step-parents like a different species. Her future husband, Asland, who seems to have known Roel for a long time, and Roel’s hidden power gradually revealed. A timid girl who had shrunk back due to her stepmother’s abuse finds herself. Happy In-Law, Happy Newlyweds, 史上最幸の嫁入り, 해피 시월드 Manhwatop is currently the largest manhwa website with thousands of high-quality manhwa. Above all, readers can enjoy reading manhwa on Manhwatop without incurring any costs. If you love the manhwa “Happy Sea World”, don’t forget to follow the Manhwatop website! Wish you happy reading!