Deep Sea Crisis Is Not Terrible

The deep sea ruins are rumored to be left over from the previous era. In the deep-sea ruins, as long as you successfully challenge the levels, you can obtain various rewards. The most precious among them is the genetic sequence medicine. This is an opportunity for humanity, but it is also a risk. Because creatures on the seabed can also enter the ruins to challenge, and can also receive rewards. Therefore, the battle between humans and underwater creatures has never stopped for thousands of years!