Azur Lane : The Unrest who conquered Serenity.

A feminine voice spoke through the crowd around a lit bonfire.

"I've got one! I heard there were wrecks lurking around the waters... hunting ships as they go!"

" 'As they go.'? Where are they going exactly?"

"Well... I really don't know! I heard all these from the Commander!" she exclaimed, despite the doubt she still kept speaking of the tale.

"These wrecks... thought to be lost in battles, made to be as forgotten monuments under the sea! Seen as a reminder of warfare!"

"Stricken with rage from the inability to prevent themselves to be toppled over by these new naval vessels."

"As surviving remaining ship-of-the-lines were doomed to be scrapped and scuttled to be as materials to fuel their master's long-term war dominance."

"Their debauchery-filled hegemony harrowed the lanes of tranquility, the path to-"

"Why do you have to use such big words?!" Interrupted
somebody amongst the listening crowd.

"To add in suspense of course!"

[Or... the world of Azur Lane is in great peril from awakened old ships.]

[Disclaimer, I may combine both the adaptation's and the game's lore along with some timelines to have a more sense of variety.]