The year is 2030, an era in which AI rules the world. The top-secret project, Project Siren, is being quietly transported across the sea. Captain Vincent knows nothing. And his second-in-command, Lena, is bound by orders and is on a “secret mission.” Operation Blue Sea, a place where trust and…

The protagonist, Romasha, is a member of the Highlanders, a defense organization organized in the upper city of Solitaire. Beautiful and with excellent grades, she is out of reach for the male members and some of them harbor sinister desires. Due to certain circumstances, she has no combat experience, but…