Yuuji Sakai

Japanese Name 坂井 悠二
Romaji Name Sakai Yuuji
Nicknames Yuu, World-Converting Ascetic
Series Shakugan no Shana
Age Varies throughout the series
Weight Approximately 55 kg
Height 165 cm
Date of Birth Unknown
Blood Type Unknown


Advertisement anime casetify


The protagonist of Shakugan no Shana


Yuuji Sakai, the male protagonist of the anime series Shakugan no Shana, is portrayed as an average high school student whose life takes a dramatic turn. Despite this, Yuuji remains a kind-hearted individual who consistently puts others before himself. His selflessness often leads to confusion and annoyance from the character of Shana, who is initially accustomed to encountering selfish individuals. However, Yuuji’s compassion and empathy gradually sow the seeds of attraction between him and Shana. Accepting his fate without resentment, he surprises Shana with his willingness to face his inevitable disappearance. Yuuji’s acts of heroism, driven by the belief that his sacrifice would be proof of his existence, showcase his courageous and selfless nature.


Yuuji Sakai’s ordinary life is turned upside down when he discovers that he is already dead and has a limited amount of time before he disappears completely. However, he learns that he is a Mystes, a special individual who possesses a treasure known as “Reiji Maigo” (Midnight Lost Child). This treasure replenishes his life force every night at midnight, allowing him to continue living as long as he can maintain his strength until then. Throughout the series, Yuuji faces the challenge of maintaining his normal life while assisting Shana in her battles and protecting Misaki City and its inhabitants.


Yuuji Sakai is portrayed as an average looking high school student. He has an average height of 165 cm and weighs approximately 55 kg. His appearance is unremarkable, reflecting his initially unassuming nature. However, as the series progresses, his character undergoes significant growth and development, both in personality and physical appearance.


As a Mystes, Yuuji possesses unique abilities that make him an important character in the Shakugan no Shana series. The Reiji Maigo within him gives him the power to restore his power of existence, thus ensuring his survival. As the story unfolds, he begins to realize the untapped potential of this treasure and learns to use it effectively. While he may not possess the extraordinary fighting skills of other characters in the series, Yuuji’s determination, resourcefulness, and willingness to sacrifice himself for others make him an invaluable asset in battles against supernatural entities.

Advertisement anime casetify


Yuuji Sakai is from the anime and light novel series Shakugan no Shana. Created by Yashichiro Takahashi and illustrated by Noizi Ito, the series follows the adventures of Shana, a Flame Haze, and Yuuji, a Mystes. The story explores their relationship, the battles they face, and the challenges of living ordinary lives in extraordinary circumstances. With its blend of action, romance, and high school drama, Shakugan no Shana captivates audiences with its unique premise and compelling characters.

Yuuji Sakai – FAQ

Who is Yuuji Sakai?

Yuuji Sakai is the main protagonist of the anime and light novel series “Shakugan no Shana”. He starts out as a normal high school student until he discovers that he possesses a rare treasure called the “Midnight Lost Child”. This artifact gives him the ability to heal and manipulate the existence of objects and people.

What is the significance of the “Midnight Lost Child” in Yuuji’s life?

The Midnight Lost Child plays a pivotal role in Yuuji’s life, as it serves as the catalyst for his involvement in the world of Flame Haze and the Crimson Denizens. This treasure also attracts various entities that seek to possess its power, making Yuuji a target for both allies and enemies.

What is Yuuji’s relationship with the Flame Haze named Shana?

Yuuji’s relationship with Shana evolves over the course of the series. At first, Shana sees Yuuji as a mere being to be protected due to his possession of the “Midnight Lost Child”. However, as they spend more time together, their bond deepens and they develop romantic feelings for each other.

Does Yuuji have any unique abilities?

While Yuuji initially lacks combat skills, his possession of the “Midnight Lost Child” gives him the power to manipulate the existence of objects and people. As the story progresses, he undergoes extensive training to improve his skills and becomes a formidable fighter capable of holding his own against powerful opponents.

What challenges does Yuuji face throughout the series?

Yuuji faces many challenges throughout the series. He must learn to navigate the complex world of Flame Haze and Crimson Denizens while dealing with the responsibilities and consequences that come with his unique abilities. He also faces personal dilemmas, such as choosing between his duty as a Flame Haze and his desire for a normal life.

Does Yuuji have any significant character development?

Yes, Yuuji undergoes significant character development throughout the series. Starting as a normal high school student, he matures and grows emotionally as he faces the harsh realities of the world in which he finds himself. His experiences shape his beliefs and values, leading to a greater understanding of sacrifice, love, and the importance of protecting those close to him.