Azur Lane: A Battlestar

You thought all isekai started the same way: a Japanese boy, a truck, a fantasy world, and a guaranteed harem. Well, no. My story is different. I didn't wake up with magical powers or a hero title. I died in the most absurd way possible: falling down a drain. And when I opened my eyes, I was no longer human.
I became something much worse... or much bigger: a ghost trapped in the hull of a colossal warship. The Battlestar Atlantis.
At first, I thought it was a bad joke: I could see, hear, and understand the crew, but no one could see me. I couldn't even warn them of the destiny I knew in advance: war against the Cylons, relentless machines that will ravage the human colonies.
Condemned to be an invisible spectator, I watched as Commander Shiho Nishizumi led her crew with iron discipline. Day after day, training, tests, precise orders... and I, learning in silence, tied to a body that is no longer mine, but to a new name: BS-81 Atlantis, Jupiter class.
This isn't an isekai of glory or princesses in love. It's the story of how I was reincarnated on a battleship and witnessed the beginning of a war that will devour the civilization that gave me life.
And worst of all... I know exactly how it ends.

Disclaimer: I do not own Azur Lane or Battlestar Galactica.