The Abyssals and the Imperial Japanese Navy had never seen anything like it, nor had they thought of the circumstances lining up like this. What used to be a temporary ceasefire to locate two lost souls has suddenly turned into an alliance against a horror that could bring fear to the whole world. It would only be a matter of time before the perpetrator would end up paying for what they had done...

Tirpitz of Iron Blood finds herself transported to another world of shipgirls when she got lost during a storm. In that world, she meets shipgirls who fights Abyssals rather than Sirens. She then gets taken in by the Maizuru fleet who she hopes will help her return home, but an old foe is trying to eliminate her and the shipgirls. (Revised version. Original is in FFN)