Deep One – Zero to Mugen no Fragment A Review of Popular Novel

Deep One – Zero to Mugen no Fragment is a popular Japanese light novel that has gained a lot of attention from fans of the genre. Written by Kakeru Kobashiri and illustrated by Yoshinori Shizuma, the novel has been praised for its unique storyline and well-developed characters. In this article, we will take a closer look at Deep One – Zero to Mugen no Fragment, its plot, characters, and themes.

Deep One – Zero to Mugen no Fragment: An Overview

Deep One – Zero to Mugen no Fragment is a fantasy novel set in a world where humans coexist with supernatural beings known as “Deep Ones.” After discovering the existence of these supernatural beings, the story thrusts the main character, a boy named Kazuki Hoshino, into a world of danger and intrigue, following his journey through it. Kazuki must navigate this world while also dealing with his own personal struggles and relationships.

Plot Summary

The story begins with Kazuki Hoshino, an ordinary high school student, who suddenly finds himself transported to a strange and unfamiliar world. In this world, he discovers that humans coexist with supernatural beings called “Deep Ones.” Kazuki soon finds himself caught up in a dangerous game between two powerful factions, each seeking to control the fate of the world. As he struggles to survive in this new world, Kazuki also faces personal challenges, including his own doubts and insecurities.

The novel is full of twists and turns, as Kazuki navigates the complex political landscape of the Deep Ones’ world. Along the way, he forms relationships with other characters, including his love interest, the powerful Deep One named Roka Kitsuregawa. The story builds towards a thrilling climax, as Kazuki must confront the true nature of the world he finds himself in and make a difficult choice that will determine the fate of everyone involved.


One of the strengths of Deep One – Zero to Mugen no Fragment is its well-developed characters. Kazuki Hoshino is a relatable protagonist, with his own doubts and struggles. Roka Kitsuregawa is a powerful and enigmatic character, who plays a pivotal role in the story. The novel also features a diverse cast of supporting characters, each with their own motivations and backstories.


Deep One – Zero to Mugen no Fragment explores a number of themes, including the nature of power, the importance of personal relationships, and the search for identity. The novel also raises questions about the relationship between humans and supernatural beings, and the ethical implications of their coexistence. Through its engaging plot and well-developed characters, the novel provides a thought-provoking exploration of these themes.


Q: Is it available in English?

A: Yes, the novel has been translated into English and is available for purchase.

Q: Is there an anime adaptation of?

A: Not yet, but there have been rumours of a potential adaptation in the future.

Q: Is the novel suitable for younger readers?

A: The novel contains some mature themes and violence, so it may not be suitable for younger readers.


Deep One – Zero to Mugen no Fragment is a well-written and engaging novel that has gained a lot of popularity among fans of the light novel genre. Its unique storyline, well-developed characters, and thought-provoking themes make it a must-read for fans of fantasy and science fiction. Whether a genre fan or seeking new reads, Deep One – Zero to Mugen no Fragment is worth checking out.