Azur Lane: The One-Ship Coast Guard

The CCGS General Corioli is an Antium-class patrol vessel that has been in service with the Corioli Federal Coast Guard. The ship has been in service for about 10 years, having seen action in almost every single seas. From combating piracy to stopping illegal arms exports.

One day, while combating a small flotilla of pirate boats, a white light manifests around the ship, causing it to vanish in thin air. What nobody knows is that the ship has been teleported in an unknown alternate universe of WW2 where ships can take the form of young girls.

Now stuck in this world, uncertain of whether he will be able to return, General Corioli decides to keep doing his job, trying to enforce the maritime laws of his old world while also trying to combat the unknown alien threat known as the Sirens.

Unbeknownst to everyone in this new world though, the storm that brought General Corioli has somehow made him overpowered, granting him abilities that would be considered impossible for a ship of his size.