[Master Tutor] Testing on the Edge of the Collapse of the Worldview

A girl (?) Who traveled from death to become a tutor is actually over a hundred years old. I didn't want to participate in the plot, but I was reborn and got involved in a war because of a ranking. From then on, I started a life of oppression... What? You ask, why does she choose to be oppressed when she is so powerful? We must abide by the Basic Law in every world, right? In □□'s world, □□ is qualified to save the world, and □□ is the master of the world. If you want to live an ordinary life under such a background, don't you have to keep your head down? The heroine expressed that she really wanted to return to Soul Society.