While the Azur Lane alliance fought the sirens head on, a shadow rebellion was waged within the siren network. Led by sirens who seek peace with the human race and bring the end to the experiments. Outnumbered and outgunned they rely on pulling the strings in varies different ways from beyond the shadows to help the shipgirls of Azur Lane win battle after battle or send their most skilled operators to disguise as humans and take the role as the commanders of the Azur Lane across the various timelines. Even with the small advantages the rebellion has procured over the course of a few months, they are still backed up against the wall... In hopes of turning the tide of a losing rebellion they turned their sights to PROJECT: Shipboy, a project aiming to create shipboys from already existing shipgirls with siren enhancements to give them an edge in combat. So far, only nine have been created, but only five been approve for combat and were sent to the front. The remaining four stay by the side of their creator, a siren by the name of Cleanser, before tragedy struck and the four were stranded in a timeline that has been hidden by the sirens...