Zhou Shu wakes up one day to find that his older sister has become an NPC in a game from an advanced civilization. She invites him to join the game, and he even has to play the villain boss.
"Sis, are you messing with me? You have to believe in science."
His sister conjures a long sword and points it at Zhou Shu's throat. "Good little brother, just join the game."
Faced with his sister's threat, Zhou Shu decides to play.
Fine, he'll be the boss. He just hopes that next time, he won't have to play one, given his overflowing sense of justice.
But then...
Zhou Shu receives another game quest and falls into deep thought.