Water Margin: The Roar of the Tiger

There’s a pocket dimension, System missions, and mission rewards. The protagonist, Zhang Yue, is a modern office drone who works himself to death from overwork during yet another round of overtime. When he wakes up, he discovers that he has become the white-fronted, ring-eyed tiger from Water Margin, face-to-face with Wu Song. Zhang Yue panics and turns to flee, leaving Wu Song utterly bewildered. Just then, the System activates and gives the protagonist a chance to turn into a human. But he is also forced onto the path of completing System missions. He has no idea what the missions will be, so he can only take things one step at a time. But asking him to start a rebellion is absurd. All that endless overtime in the modern world has already worn him out. Who would want to go looking for a job in ancient times?