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Zhou Ming, an ordinary office worker, has a rough life, aside from being oppressed by his higher ups, he also is poor. But due to this unexpected opportunity, Zhou Yuan gained a system. And now, his life takes a complete 360 turn.

Never having known the warmth of family, he was reborn in another world. Named Yuri, he is doted on by his parents and lives a new life in peace as it should be. However, the country where Yuri and the others live is threatened by the "other humans"

Republic of Korea Special Forces, Kang Yi Chan. During the mission, he faced enemies to save his comrades and was isolated alone in the operational area of the mission. It had been several days since he had faced the enemy without being able to sleep