Simhaesu

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?!
(Source: Toomics)
Notes:
- Includes six extra chapters.
- Originally published on Toomics where chapters 1-3 were subsequently combined to form chapters 1-2 on Naver.