but--
Goldruv Mujik is right.
At least to some extent, it is correct.
The submarine has now broken down, and this is the last fortress of mankind.
Although the concept-level camouflage is released to hide the submarine, it is hard to say what kind of means the enemy will have, and such a technology will be cracked.
......Is it possible that the explorer can only be Fujimaru Rika alone?
Chapter completed!