After Events of Akame Ga Kill and Valiant Hearts: The Great War. This story sets during World War II. There was a Pacific War between United States & Japanese Empire, after The Attack on Pearl Harbor. The US declared war on Japan. The Imperial Japanese Navy made Super-battleship Yamato, But Up to 1945, the Final days of World War II. Yamato and its naval fleet are on the way to their destination on Okinawa but in Alternate Timeline Tatsumi is the last survivor of the Night Raid this saddens him that he lost his friends including two girlfriends who are falling in love with him Mine dying in his arms after she used all her life force to kill Budo. Akame who died after she was so exhausted after using her Triumph Card from Murasame died same way as Mine, dying in his arms. When he offers to get second chances, He travels back in time into World War II Era. He's now served as Seaman Apprentice Airmen from Anti-Aircraft defense unit of Yamato, His new friends Mitsuru Yoshida Junior officer of Yamato, Hideki Amano Airmen AA Defense Unit of Yamato. They're now served the Empire of Japan. In a story about survival, sacrifice and friendship.

The Allies -

Jordan Johnson - US Marine Platoon
Mike Gaido - US Army Platoon
Aaron Jackson - TBF-1C Avenger Pilot
Damian Henderson - SBD Dauntless Pilot
Jacob Baldwin - F6F Hellcat Pilot
Jonathan Myers - SB2C Helldiver Pilot
Skipper Dawson - Vought F4U Corsair Pilot
John Anderson - Combat Medic
Desmond Doss - Combat Medic
Miles Browning - Captain of USS Enterprise
Raymond A Spruance - Rear Admiral of United States Navy
William Halsey Jr. - Admiral of United States Navy
Jimmy Doolittle - Lieutenant Colonel

The Japanese -

Tatsumi - Seaman Apprentice Airmen AA Defense unit of battleship Yamato
Mitsuru Yoshida - Junior Officer of battleship Yamato
Seiichi Itō - Vice Admiral of Imperial Japanese Navy & battleship Yamato
Aruga Kosāku - Captain of battleship Yamato
Isoroku Yamamoto - Admiral of Imperial Japanese Navy & battleship Yamato (his flagship)
Hideki Amano - Seaman Apprentice Airmen AA Defense unit of battleship Yamato
Tamon Yamaguchi - Rear Admiral of Imperial Japanese Navy & Aircraft Carrier Hiryū
Chūichi Nagumo - Vice Admiral of Imperial Japanese Navy & Aircraft Carrier Akagi
Minoru Genda - Commander of Imperial Japanese Navy & Aircraft Carrier Akagi
Tomeo Kaku - Captain of Imperial Japanese Navy & Aircraft Carrier Hiryū
Tadashi Amano - Mitsubishi A6M Zero Pilot
Miho Shiota - Imperial Japanese Soldier