Li Wu and Iruma's Daily Obsession with Demons

Traveled through time? And a younger brother? Wait, isn't this everyday life? Where did the devil come from? Don't panic, host, I... (The introduction is weak, read the text) PS: The author personally likes to read Iruma. This is the first time the author has tried to write a fanfic. The settings for Iruma and his classmates will not change. You can tell me what you think. If you like Iruma, please come in and take a look.