He is the strongest soldier, but also the wildest soldier. No one can control him, and no one can tame him. Because of a respected person, he killed someone, went to prison, and even lost his military status. When he was sent back, he never expected to be wronged again. Originally, he lived alone, and he didn't care about life or death. However, he had an older sister. The older sister who watched him since he was a child didn't allow him to have anything to do...