The Capital City's First Day (王都の一日編, Outo no Ichinichi Hen) is the first and debut arc of the Re:Zero kara Hajimeru Isekai Seikatsu series, followed by the The Tumultuous Week Arc. Arc 1 consists of one light novel volume which was then adapted into two manga volumes with art made by Daichi Matsuse and three anime episodes.
Unaware of what happened just now, Natsuki Subaru finds himself being summoned to a new and mysterious world. There, in the Kingdom of Lugnica, he believes that he is the protagonist, the hero to-be. However, that isn't the case. He soon finds himself being beaten by thugs, but is saved. A beautiful, graceful maiden with amethyst eyes and silver-hair helps him out. Thus, he decides to help this girl with recovering her stolen insignia she is looking for.
However, as they continue, he ends up being murdered by someone, but returns from his death to a certain moment in time he had been in, and decides to use this ability to save the girl from her predestined death.
- Main article: Re:Zero Light Novel Volume 1/Synopsis
- Subaru's second death was toned down in the light novel. In the web novel, Elsa gouged out Subaru's eyes and dismembers each of his limbs.
- A magic called duplication magic is mentioned which isn't present in the Light Novel. It is said to be able to replicate the appearance of living organisms, as well as reproducing items like food.