Deus Ex Baryon

Before you start

No earlier anime is listed in the catalog. This is not a verified watch-order guarantee.

Story

When countless laser beams come down from the sky and destroy all the countries that hold the advanced weapons, the world descends into chaos. Taiwan fortunately escapes the first wave of attack. People then assume that the cities built underwater are immune to the invasion and therefore gather forces under the sea to prepare for the counter-attack. However, they are unware of the sea monsters that will prove to be the beginning of another nightmare... (Source: CR)