After Accidentally Falling into a Stolen Pen, I Became the Group's Favorite European Emperor

Time Travel/BG/Single Arrow for All/Easy and Funny Tomb Robbery+all+Chosen European Emperor. An ordinary modern female college student travels through the mountains camping during her graduation trip. Wearing it caused a slight fall + high fever, memory damage (only self-awareness and common sense were retained, family memory was lost, and all plot memories of stolen pens were lost)