Leviathan Manhwa also known as (AKA) “심해수”. This OnGoing webtoon was released on 2018. The story was written by Lee Gyuntak and illustrations by Noh Miyoung. Leviathan webtoon is about Action, Fantasy story.
Leviathan Manhwa – Summary
The world is submerged, and sea monsters rule the earth. Will Bota and his family ever make it to safety, and escape this aquatic hell? …And who in the world is Kana?!