My Shipgirls Can Transform Into Dreadnoughts

As a transmigrated admiral, Wei An faces a world where powerful shipgirls defend humanity from the terrifying Deep Sea. But his own 'first shipgirl,' the adorable destroyer Yukikaze, is also his adoptive sister—and secretly, his oathed wife. This forbidden bond makes every interaction a risk, with the infamous Military Police constantly hunting admirals who 'attack' child-like shipgirls. Yet, Wei An harbors a unique, game-breaking talent: [Shipgirl Renovation]. He can supercharge any shipgirl's mental core, letting even a petite destroyer manifest and control a battleship-class hull! Combined with his [Ship Outfit Production] from his past life as a designer, he can arm them with never-before-seen weapons, turning pint-sized destroyers into world-ending leviathans. Now, as he prepares to enter the Admiral Academy, the biggest challenge isn't the Deep Sea, but hiding his secret marriage and his absurdly overpowered, child-like 'wife' from the very authorities sworn to arrest him. Will his forbidden power secure their future, or land him in an Admiral Correction Facility?