The Magic Power Changes Skin, Junior Sister Comes to Take a Look

I'm bound to a villain system, but I'm a good guy by nature! Dressed as the sect leader of a ruined temple, I had just finished changing the skin of my magic skills, when my junior sister came over and poked me in the arm: Senior brother, why are your eyes so bright after practicing? I blocked the exercise book with my hand and pressed it to death. I didn't dare to tell the truth, but I was anxious to stop him: Don't pick it up! Serious exercises