V1 is the first ever machine that is created by humanity using siren technology(A.K.A the cube), unlike ship girl, this machine is not created to have a human-like feature except for arms, finger, and legs(A.K.A no hair, no skin, no nail, etc), its head is similar to that of a security camera. However, this machine has the special ability to repairing itself using blood, making it an efficient war machine against siren. But, the resourse of making the healing system of this machine is considered too expensive and took to long to create, making it not worth creating. And thus being the only one of its kind... V1 will not have any relationship with any of the girls, you will understand why soon... The image for the cover is from "MCN" in his video "who art in hell - angelic gauntlet" Ultrakill and azur lane does not belong to me. Ultrakill by arsi "Hakita" palata Azur Lane by Manjuu and Yongshi.

The war between humanity and the Sirens rages intensely. In a desperate bid, humanity creates the so-called "shipgirls" to combat the Sirens. However, one fateful day, every human and shipgirl vanishes without a trace. The Sirens, perplexed yet jubilant, colonize Earth, only to discover abandoned buildings. Unbeknownst to them, the fate that would be fall them. No. This isn't going to be long... maybe. This is from the Sirens POV btw.