4 imperial Japanese Navy ships in another world

Operation Ten-Go (天号作戦, Ten-gō Sakusen), also known as Operation Heaven One (or Ten-ichi-gō 天一号), was the last major Japanese naval operation in the Pacific Theater of World War II. In April 1945, the Japanese battleship Yamato, the largest battleship in the world, and nine other Japanese warships, embarked from Japan for a suicide attack on Allied forces engaged in the Battle of Okinawa. The Japanese force was attacked by U.S. carrier-borne aircraft before it could reach Okinawa; Yamato and five other Japanese warships were sunk.

but there Journey is not over yet, they where needed in another time line look similar to there own time line but different, the Super Battleship and her 3 Remaining escort of the imperial Japanese Navy well found themselves fighting a different enemy not from this world.

while the Yamato Class of this world where cancel but the third was converted into a Aircraft carrier, she will be the New class called Shinano-class super carrier of the Sakura empire.