Leviathan

Leviathan, also known as Deep Sea Water is a completed Korean post-apocalypse manhwa written by Lee Gyuntak and illustrated by Noh Miyoung. It was originally published by Toomics, which also handled its English release. Now, it has rereleased on LINE Webtoon from the beginning.

Taking place on a post-apocalyptic aquatic earth a century after a calamity rose the sea levels, Leviathan follows the adventures of siblings Bota and Lita after their father, Teon Ma, sacrificed his life to save them from a sea monster. The two are soon taken in by a woman called Kana, an acquaintance of their deceased father.