Tokumu Houkoukan Yumihari

In the aftermath of a devastating temporal war that has left Japan in ruins, a young boy named Shoichi is forced to flee his homeland. Accompanied by his two sisters and a group of other children, he embarks on a perilous journey across the sea in search of safety. However, their escape is violently interrupted when they are ambushed by mysterious samurai who have traveled back from the future. During the chaos of this attack, an unknown life form targets one of the children, a girl named Shizue, stealing her face and leaving her in a dire condition. Just as all hope seems lost, the desperate survivors are rescued by the crew of an enigmatic battleship known as the Yumihari. Taken aboard the massive vessel, the children find temporary refuge from the dangers pursuing them. Yet, once safely on the ship, Shoichi makes a startling discovery: Shizue's horrific injury has completely vanished, with her face entirely healed as if the attack had never occurred. This inexplicable restoration leaves him questioning the true nature of the Yumihari and the extraordinary secrets harbored within its hull.