Shinu hodo Tsuyoku Nare

Ai Shinogami, a low-ranking member of the United Galactic Army, was expected to die in combat but survived after injuries that should have been fatal. His chest, pierced by an enemy known as the Kaiki, healed, and his severed arm reattached. On the brink of death, Ai formed a pact with Nosferatu, the Kaiki's ruler, allowing the entity to reside within him. This agreement grants Ai the ability to resurrect after each death, with his strength growing each time. He repeatedly returns from battles where his unit is destroyed, leading to the nickname "Grim Reaper." Despite the fear he instills, Ai keeps fighting against the Kaiki to protect humanity, regardless of how often he perishes.