The Fat Woman Who Fell into the Sea: But I’m a Mermaid Princess

Sierra, the "fat woman" whose best friend stole her mark and who was pushed into the sea by her lover, awakens as a mermaid princess and bears three sons with the sea god Leyden. Six months later, she returns with her adorable babies to exact revenge, rising from being mocked as a useless nobody to a true Sea Saintess, exposing the conspiracy of the Sea Witch Clan, reclaiming the Twin Fish Mark, and leading the mermaid tribe to fight against the Black Tide. In the end, she mends the sky, reincarnates as an egg, and under the protection of family affection and love, is reunited with Leyden and their children.