To Your Eternity
To Your Eternity is a Japanese manga series written and illustrated by Yoshitoki Ōima. It was serialized in Kodansha's manga magazine Weekly Shōnen Magazine from November 2016 to June 2025, with its chapters collected in 25 volumes. The story is about an immortal being, Fushi, who takes on multiple forms and freely utilizes their respective natural abilities at will, including that of an abandoned white-haired boy and his white wolf, in order to further evolve and stimulate as it learns what it means to be truly human over the decades and centuries.
Ōima, inspired by her own grandmother's death, aimed to write about survival and the character Fushi, who initially is an emotionless stone but gradually develops a self and personality as a result of interacting with humans. In contrast to her previous work, A Silent Voice, To Your Eternity puts little focus on the characters' past but instead upon their future.
In North America, the manga is licensed by Kodansha USA for a digital and printed English release. An anime television series adaptation produced by Brain's Base aired from April to August 2021. A second season produced by Drive aired from October 2022 to March 2023. A third season produced by Drive and Studio Massket premiered in October 2025.
To Your Eternity has received acclaim in Japan, earning many awards and generating major sales. Critical response to the series' debut was very positive, based on the emotional focus on the villagers and Fushi to the point of often earning perfect scores. Fushi's continuous character arc was praised while Ōima's artistry enjoyed critical acclaim due to its detailed facial expressions and environments.
Plot
Part One
A mysterious being, the Beholder, creates a white orb later named Fushi by a spirited girl. Initially a rock, Fushi takes the form of a dying arctic wolf and meets a lonely boy who mistakes him for his lost pet. After the boy's death, Fushi adopts his form and travels to Ninannah, where he encounters March, a girl destined as a sacrifice to a monstrous bear, Oniguma. March teaches him language and names him. Upon defeating Oniguma, Fushi, March, her protector Parona, and the elder Pioran are captured by the warrior Hayase. Though they escape, March dies shielding Parona, her spirit lingering. Fushi flees Ninannah, evading Hayase's pursuit.With Pioran, Fushi learns speech. En route to Takunaha, they battle a Nokker—a parasitic entity that steals his forms—but reclaim what was lost. There, he befriends Gugu, a disfigured boy who sacrifices himself for Rean, who then becomes a spirit. For four years, Fushi lives as a human until Gugu's death forces him to leave. Hayase manipulates Tonari into luring Fushi onto a prison ship bound for Jananda Island. In gladiatorial combat, Hayase reveals she murdered Parona and impersonated her, infuriating Fushi. Overpowered, Fushi is saved by Tonari's intervention. When Nokkers attack, killing Tonari's allies, Fushi destroys them and abandons Hayase at sea. Reuniting with Pioran, he retreats to an island where her dementia worsens. Before dying, she asks the Beholder to reincarnate as something useful—returning as a horse.
For forty years, Fushi isolates himself until Nokkers target humans again. He meets Hisame, Hayase's reincarnated granddaughter, whose arm harbors a Nokker. After clashing with the now-adult Tonari, Hisame flees. Tonari dies, joining Fushi's spirits. Over centuries, he avoids humanity, but Hayase's descendants—like Kahaku—pursue him, forming the Guardian Force, a cult opposing Nokkers.
Captured by Prince Bonchien, Fushi is coerced into demonstrating resurrection. After escaping, he and Bon prepare for a Nokker assault on Renril. Disguised as Booze Man, Fushi reshapes the city, reviving March accidentally. Three allies die, but Bon reveals they can be restored. When Kahaku's Nokker overwhelms Fushi, Bon sacrifices himself, allowing Fushi to regain strength. Reviving his allies, Fushi secures victory. Kahaku later takes his own life, confessing his devotion.
Part Two
Fushi vows to create a peaceful world and resurrect his fallen companions before entering a centuries-long slumber, his essence spreading across the planet to suppress the Nokkers. Unbeknownst to him, the Nokkers survive by evolving into microscopic parasites, hiding within human hosts. The one that once possessed Kahaku now lurks within Mizuha, the eighteenth reincarnation of Hayase, secretly rallying the remaining Nokkers for Fushi's eventual return.Awakening in the modern era, Fushi revives his eleven spirit companions—March, Gugu, Tonari, Bonchien, and others. The Beholder appears as a boy named Satoru, while Fushi crosses paths with a teenager, Yuki, and Mizuha, who—as Hayase's latest incarnation—becomes obsessed with him. When Mizuha kills her mother, only for the woman to inexplicably revive, Fushi realizes the Nokkers never vanished—they have integrated into humanity. Torn between eradication and coexistence, his hesitation allows Hayase's Nokker to retaliate, attacking Yuki's school.
Though Fushi destroys Hayase's Nokker and dismantles its network, others remain hidden in society. Satoru offers him omnipotence, but Fushi refuses. Before erasing his own memories, Satoru reveals he created the world out of boredom, longing to perish within it—and now entrusts Fushi as its eternal guardian.
Six decades later, with Nokkers widely known and Yuki gone, Fushi leaves with his resurrected friends, continuing his timeless watch.
Characters
;Fushi;Nokkers
;The Nameless Boy
;March
;Parona
;Pioran
;Hayase
;Gugu
;Shin
;Rean
;Booze Man
;Tonari
;Hisame
;Kahaku
;Bonchien Nicoli la Tasty Peach Uralis
;Torta
;Pocoa
;Fen
;Nixon
;Todo
;Cylira
;Kai Renald Rawle
;Hairo Rich
;Messar Robin Bastar
;Alme
;Iddy
;Cam
;Yuiss
;Sera
;Sebas
;Satoru
;Mizuha
;Yūki Aoki
;Hanna
;Kazumu Tamaki
;Suzuhiko Senba
;Aiko
;Kazumitsu
;Izumi
;Itsuki
;Mimori
;Hirotoshi
;Saki
;Fūna
;Nagisa
;Kasabe
;The Beholder
Production
Yoshitoki Ōima conceived the title To Your Eternity after learning that her sick grandmother was going to pass away. At the outset, she was only certain of the title's nuance, but could not arrive at a decision. With the encouragement of colleagues, she eventually chose To Your Eternity. The decision to give the manga a fantasy setting was taken for the freedom it afforded, with supernatural beings offering unusual possibilities. She compares To Your Eternity to her other works, and states that, while A Silent Voice focuses on characters in the present confronting their past, To Your Eternity focuses on the future. She also mentions exploring the theme of death in Mardock Scramble, A Silent Voice and To Your Eternity. The character Fushi originated from Ōima's work in primary school, although the setting changed before the series started. Fushi was originally to be female, but a colleague suggested a male protagonist for a different appeal. Ōima wanted to make the protagonist neutral, and said she prefers neutral female characters. Each volume cover represents a character's dream such as the first one, which depicts the unnamed youth finding freedom. According to Oima, Fushi does not want to forget the people he meets on his journeys.Characters featured in the series are based on real life personalities. For example, Pioran reminded Ōima of her deceased grandmother. She furthermore expresses some guilt for having characters die. There are approximately 13 characters that are greatly affected by Fushi and which, before the series' beginning, would lead Ōima to the title, "Ash Swords of 13 People", before being replaced by "To Your Eternity". When it came to drawing, March was Ōima's favorite character due to her short stature. Furthermore, Ōima says she likes drawing children in confined places.
The overall setting is that of a main character being "a boy who knows nothing". Ōima wanted the reader to find themself, like Fushi, in this situation where they do not know anything. It is for this reason that she did not give prominence to any character other than the hero. A common theme portrayed in the manga is death and immortality. To reinforce the blank slate themes, she decided to create a white universe, which was how she obtained a snowy landscape. As characters living in this snowy region are not part of an indigenous population, she decided not to depict them as, for example, Inuit. For research, she watched several documentaries in order to learn how to make the boy look like he was living in a world of "survival", with limited resources and skills. To accomplish this, she had to think deeply about what was practical under such difficult circumstances. March was created to be talkative and balance the quiet ones. The manga presents the climate, disease and the polar bear as obstacles to the human will. Ōima elaborates that people have to live with these challenges, and it is to show how to overcome them that she included them in the scenes.
Adaptation
Director expressed surprise when first reading the manga series, initially believing the young villager would be the lead character rather than Fushi. He felt that the themes Ōima was approaching were thought-provoking, which he found challenging. Murata stated that, as minor parts of the manga were changed, the anime would stay true to the original printed version. The official Twitter account of the anime series stated that the main theme presented through March was the notion of growing into adulthood.In casting the actors, Reiji Kawashima's voice quality was befitting for Fushifrom his point of view. "The Observer", played by Kenjiro Tsuda, is a narrative role that was not all that involved in the story due to Murata's view that Tsuda's voice was "cool". The first episode only had two voice actors: Kawashima and Tsuda. The former expressed relief when working as he felt that Tsuda was a friendly person. Tsuda felt that Kawashima was a passionate actor, exemplified by his early arrival for each episode's recording session. Kawashima thought his character to be exhausting based on his varied experiences, while Tsuda felt Fushi was too mysterious. Rie Hikisaka, who plays March, enjoyed Kawashima's work and his interactions with Pioran. For the sixth episode, Kawashima expressed difficulty portraying Fushi's lines due to the fact that the character was learning how to speak. Ryoko Shiraishi commented that while she enjoyed voicing Gugu, the character's fluid personality made the work more challenging.