How can you touch the girl without being struck by lightning! The roar of the time traveler A. I am special... Why can you bring the girl home! The roar of the time traveler B is unwilling. This is preferential treatment... Why do we cry when we see you? Slash if you want to draw your sword!? There are many time travelers. Am I your enemy... This book is the story of the protagonist leading a group of girls to fight the time travelers...