Don't Panic When You Meet Sadako. Please Bring Out the Great Demon to Talk to Her.

Summon evil spirits to attack me? I beat him with my backhand! After time travel, I became a mythical star card master. Dare to claim your life? My mountain patrol flag is already hungry and thirsty! Are classmates causing trouble? Must be castrated on the spot. Want to judge me? My backstage... Is the entire human race!