Yoshitoki Ōima debuted To Your Eternity in issue #50 of Kodansha's shōnenmanga magazine Weekly Shōnen Magazine on November 9, 2016.[1] The manga was announced on May 23, 2016.[2] It is Ōima's second series in Weekly Shōnen Magazine; her first series was the critically acclaimed A Silent Voice. The story follows an immortal being, Fushi, who arrives on the Earth and takes the form of an abandoned young villager and his wolf.
The series' first arc finished on December 4, 2019,[3] while the second arc started on January 22, 2020.[4] An anime television series adaptation by Brain's Base premiered on April 12, 2021.
On January 17, 2017, Kodansha USA announced that they would digitally publish the first ten chapters of the series on various digital platforms. Thereafter, they will publish the manga's new chapters simultaneously with the Japanese release.[5][6] The first printed volume in North America was released on October 31, 2017.[7]
2. "The Immature Girl" (おとなしくない少女, Otonashikunai Shōjō)
3. "Playing House" (ままごと, Mamagoto)
4. "A Minor Evolution" (小さな進化, Chīsana Shinka)
After falling to Earth, a divine stone takes the form of wolf it touched and slowly develops its own life. After wandering in a frozen area, the wolf meets a young abandoned villager who mistakes him for his pet Johan. The youth takes care of the wolf and teaches him how to eat as he also dreams of wanting to meet more people. However, after suffering a major wound, the boy dies. Before dying, the boy asks the wolf never to forget him causing it to take his human form and wander the Earth. Unable to live on his own, the wolf dies multiple times but his immortality allows him to return to life in a few moments. Meanwhile, a young village girl named March escapes from her home to avoid being used as a sacrifice to Oniguma the Bear God. As she escapes, she meets the white-haired immortal boy whom she decides to adopt under the name of Fushi after teaching him how to eat and behave like a person. Fearing another innocent girl would be sacrificed, March returns to Ninanah. However, Fushi follows her and kills the bear that was going to eat March and her elder sister figure Parona.
5. "Journey of Memories" (追想の旅路, Tsuisō no Tabiji)
6. "The Comfortable Land of Yanome" (住みよい国ヤノメ, Sumi yoi Kuni Yanome)
7. "A Large Vessel" (大きな器, Ōkina Utsuwa)
8. "Liberation Plan" (解放計画, Kaihō Keikaku)
9. "A Meaningful Death" (意味ある死, Imi aru Shi)
10. "Playing with Dolls" (にんぎょう遊び, Ningyō Asobi)
11. "Those Who Accompany You" (共にゆく人, Tomoni yuku Hito)
12. "One Who Collects, One Who Steals" (集める者、奪う者, Atsumeru Mono, Ubau Mono)
13. "Our Objective" (私達の目的, Watashitachi no Mokuteki)
Hayase declares that March, Parona, and Fushi can be spared if they follow her to the nation of Yanome. However, it is revealed to be a trap and three are imprisoned. Parona manages to break out of prison and find a route so that March and Fushi can find a way back to safety. Hayase's group attacks, and March dies shielding Parona from an arrow fired by Hayase. This enrages Fushi who transforms into the injured white bear and defeats the attackers; scarring Hayase's face in process. Back in her village, a depressed Parona tells Fushi to escape as Yanome want him. Fushi does it and is accompanied by an elder, Pioran, who is curious about his supernatural abilities. Thanks to her, Fushi learns how to talk and think for himself but encounters a creature that attempts to steal his forms and memories. Following Fushi's victory, an unknown silhouette called "the Beholder" claims that the two have a goal of preserving the world, much to Fushi's confusion.
14. "The Boy Who Wants to Change" (変わりたい少年, Kawaritai Shōnen)
15. "The Two 'Monsters'" (二人の“怪物”, Futari no “Kaibutsu”)
16. "Guinea Pig" (実験台, Jikken-dai)
17. "Things Let Go" (手放したもの, Tebanashita mono)
18. "New Life" (新しい人生, Atarashī Jinsei)
19. "Deep Memory" (深い記憶, Fukai Kioku)
20. "The Exterior of Humans and 'Monsters'" (人間と“怪物”の外側, Ningen to “Kaibutsu” no Sotogawa)
21. "An Encounter Before Returning Home" (帰宅前の遭遇, Kitaku mae no Sōgū)
22. "Fight of the Brothers" (兄弟達の戦い, Kyōdai-tachi no Tatakai)
23. "The Price of Flames" (対価の火, Taika no Hi)
24. "New Family" (新しい家族, Atarashī Kazoku)
Fushi and Pioran reach the "Beer Gramps' shop" where they stay to live as they befriend the owner, simply called Booze Man. However, Fushi has problems interacting with the masked assistant Gugu who is jealous of how the girl Rean Cropp is attracted to Fushi. As they meet, Fushi accidentally shows his immortality traits which Gugu abuses to make Fushi's body create replicas of other objects. The antagonistic Gugu abandons the shop, but Fushi and Ren follow him. They learn that Gugu wears a mask to cover his deformed face but still bond with him. Shortly afterwards, the invisible hooded man that knows about Fushi's origins, arrives and tells him that he must leave the area. However, Fushi ignores him and spends four years staying in the restaurant in order to learn how to cook.