Mark Greyson after killing Angstrom Levy and returning to his dimension, making sure his mother and brother are safe, begins to fly quickly through the sky, thinking about what he did to save his loved ones. Until suddenly he realizes that he is above a ruined city that has been hit by a flood. He quickly sees a drowning boy in a black tracksuit and saves him. He learns from the boy that he is in the city of Priestella, which has been attacked by the evil Archbishops of Sin. I have no rights to invincible or Re zero

A slice of life story following the events in the Forbidden Library near the end of Arc 4. It explores the interactions between Beatrice and Subaru if they had time to get to know each other and learn each other's hearts.

Monkey D. Luffy, the man who aimed to conquer the Grandline to become the king of pirates, found himself somewhere different, somewhere unfamiliar without the rest of his crew. The notorious outlaw was put in the place of Subaru. How will Luffy handle the difficulties of Re:Zero?