At the age of eight, Ijin Yu lost his parents in a plane crash and became stranded in a foreign land, forced to become a child mercenary in order to stay alive. He returns home ten years later to be reunited with his family in Korea, where food and shelter are plenty and everything seems peaceful. But Ijin will soon learn that life as a teenager is a whole other feat of survival. With only one year of high school left, Ijin must master new tactics to maneuver his way around the schoolhouse battleground. Can he survive a year of high school? Or rather, will the school be able to survive him?
10 years prior to this story, there was apparently a airplane crashing from which many people died. The main character was thought by everyone to be dead. However, his sister and grandpa had been notified that he was actually alive, and he's going to transfer to his sister's school. He had been living as a soldier for the 10 years he was missing and is super strong. He now deals wth his sister's bullies at school and it's just satisfying.
Pretty good the main character reactions are more human-like than in other manhua that are treating with "OP main character that deals with bullies".
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