Beautiful girl × sea battle simulation RPG. As the commander, you will fight side by side with "Guardian (ガーディアン)"! ◆Story Background The history of human beings is the history of wars. In the future, due to the war, human beings can no longer live on the surface... In order to continue human civilization, people made capsules and kept humans in them. In order to protect the capsules, they created artificial creatures called "Guardian". Life form. "Guardian (ガーディアン)" shoulders the mission of protecting human beings. People are sleeping under the protection of "Guardian (ガーディアン)". …When human beings woke up from endless slumber, there was a non-human voice in "Guardian (ガーディアン)". The rebellious "Guardian (ガーディアン)" called itself "アーク" and held the banner of "clearing" human beings. Many people were thrown into the bottom of the sea that never saw the sun, and they really fell asleep... It is necessary to accept this destiny? Or save the future of mankind with your partners? it's all up to you