C2929 On the Seabed Island the Demon Reappeared

The flat sea, the Devil's Triangle.

Looking down from the sky, the entire Devil Triangle Sea was pitch black in different colors than the surrounding sea.

It was strange and mysterious.

The entire sea was like a spinning black hole in the sea, absorbing the surrounding seawater.

It was as if the gates of the Underworld's Abyss were opened in the mortal world