Modifier, I Was Cheated by Playing Around with the System.

My job is as a modifier. I can enter any system, beat the male protagonist, and meet the female protagonist. This is my daily life. Just when I was about to reward myself for becoming an "adult", some cheater demoted me! Send me to a strange place and leave me to fend for myself. But fortunately, I am also knowledgeable. What can I do with a little time travel? Climb them all for me! No mission? Then just find it yourself. Isn't the reward enough? Make an effort. Now that we have arrived in the Tang Dynasty, we must first resolve life-long matters. After? Besides, who knows what other weird things this cheating system will do. See how I open up a whole new world... Of course, don't mess with the cheating system... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.