Gleipnir (Japanese: グレイプニル, Hepburn: Gureipuniru) is a Japanese manga series written and illustrated by Sun Takeda [ja]. It was serialized in Kodansha's seinen manga magazine Young Magazine the 3rd [ja] from October 2015 to April 2021, and later transferred to Monthly Young Magazine [ja], where it ran from May 2021 to April 2023. Its chapters were collected in fourteen tankōbon volumes. The manga was licensed by Kodansha USA in North America. A 13-episode anime television series adaptation by Pine Jam aired from April to June 2020.
Plot
High school student Shuichi Kagaya receives the ability to transform into a giant monstrous dog. It resembles a mascot costume with a zipper on a back and a big smile on the front. He meets a normal girl from the same class, Claire Aoki, whose sister, Elena, was responsible for killing their parents.
A high school boy with the ability to transform into a dog-like mascot costume, complete with a large pistol on the belt and a zipper up his spine which, when any female human climbs inside his empty body, increases his physical and mental abilities. When transformed, Shuichi gains the physical ability of a human at peak levels of fitness, strength and endurance, and when paired with a partner inside him it becomes superhuman. He retains some abilities in his human form, such as a sense of smell even keener than dogs. His human appearance is average with the exception of a noticeable scar around his neck after fighting with Elena.
A high school girl. She attempts suicide when no one believed her. After meeting Shuichi, she gets obsessed with finding Elena and the truth behind the creation of monsters. At first, she abuses Shuichi, but cares about him to the point she swore to kill herself should he die first so they can stay together. Behind her personality, Claire possesses a determination to kill anyone without hesitation or remorse, and close herself off from her emotions to an extent that Shuichi finds terrifying. Claire is physically weak, but when she is inside Shuichi, she controls his body movement, and receives a massive boost to physical capability and superhuman level. She later uses a coin to gain the power to slow down her perception of time increasing her speed and reflexes. It is revealed that Clair and Elena are paternal half-sisters, due to Clair being born from an affair, between her father and one of his mistresses.
Claire's sister. After receiving the ability to transform into a ghost, she killed her parents, seemingly for the hypocritical manner they acted while the sisters had strict rules. She loves Claire dearly and may be the only person she is unwilling to harm. Emotionally unstable and psychotic even before becoming a monster she has, according to Shuichi after he scented her clothing, committed a staggering number of murders. Elena is revealed to be Shuichi's ex-girlfriend and the one who turned him into a monster. The idea that anyone else might be inside Shuichi makes Elena upset. She removes his head and finds Claire inside him, and he survives due to some unknown ability of his monster form to keep him alive after experiencing injuries.
A member of a highly advanced alien species with the ability to grant a limited wish in exchange for golden coins containing one of his fellow aliens. Should anyone locate all coins he has even offered to grant the person enough power to do almost anything, even destroy a planet should they wish, seemingly regardless for how such a power may be abused.
Another high school girl. She is cheerful, enough so Shuichi once felt better about himself. It is suggested she has a crush on Shuichi as she was the one to notice how depressed he was while everyone thought he just seemed well.
Abukawa (アブカワ)
Voiced by: Yoshiaki Hasegawa[6] (Japanese); Nicholas Andrew Louie[5] (English)
One of the Gatherers and a selfish student. She uses a coin to ask the Alien for increased speed in order to excel at sports, but dislikes her abilities after it transformed her arms and legs into monster limbs.
A university student and the first monster siding with Claire and Shuichi. Having found a coin he asked the Alien to make him stronger than anyone else. A martial artist, he created his style to utilize the strength of his body, but finding humans no longer challenged him he has decided to defeat monsters.
One of Koyanagi's allies. A notorious coward, he is easily controlled and manipulated by others, especially those he is afraid of. He is in love with Chihiro, but is fearful. His monster ability lets him transform his head into a surveillance camera, which he uses to follow and record a video. Any recording he makes he can upload to computers or wirelessly online.
A very powerful Gatherer and Elena's friend. He despises being told what to do and enjoys killing people who try, except for Elena. Subaru summons and controls two large monsters, a male on the left side and a female on the right, calling them his Parents. They are immensely strong and do all by fighting for him, while he is kept safe between their hands.
In North America, Kodansha USA announced it had licensed the manga for English release in July 2018.[13] The fourteen volumes were released from March 19, 2019,[14] to March 19, 2024.[15]
An anime television series adaptation was announced in March 2019. The series is animated by Pine Jam and directed by Kazuhiro Yoneda, with Shinichi Inotsume handling series composition, and Takahiro Kishida designing the characters. Ryōhei Sataka composes the series' music.[40] It aired from April 5 to June 28, 2020, on Tokyo MX and other channels.[1][41]Hikaru performed the series' opening theme song,[4] while international music group Mili performed its ending theme song "Ame to Taieki to Nioi".[42]
Funimation (later branded as Crunchyroll) has acquired the series globally, excluding Asia and streams the series on FunimationNow, AnimeLab and Wakanim.[43] In Southeast Asia and South Asia, the series is licensed by Medialink, which streams it on the Ani-One YouTube channel in South Asia and select Southeast Asian countries, and on the streaming service Dimsum in Singapore, Malaysia, and Brunei.[44] On December 12, 2020, Funimation announced the series would receive a dub with a two-episode premiere the next day.[5] The Gleipnir DVD and Blu-Ray set were released in North America on July 6, 2021.[45]
"Something Inside of Me" Transliteration: "Boku no Naka niwa" (Japanese: 僕の中には)
Kazuhiro Yoneda
Shinichi Inotsume
April 5, 2020 (2020-04-05)
A shadowy figure puts a golden coin in a vending machine and the man asks if it is responsible. Mifune gets a future college recommendation from Shuichi. When Claire sets a storehouse ablaze, Shuichi saves her and inadvertently leaves the phone. Claire returns it to Shuichi and reveals she knows he is a monster. Shuichi saves himself from falling off the roof, and notices his form and a coin somehow connected to monsters. Claire explains about her suicide attempt when no one believed her. They are ambushed by another girl, identifying them as Gatherers.
2
"What It Means to Be Empty" Transliteration: "Karappo no Imi" (Japanese: 空っぽの意味)
Directed by : Katsuya Shigehara Storyboarded by : Katsuya Shigehara, Ryoma Ebata
One day earlier, Hikawa receives the speed ability on her legs, after finding a coin and the machine. She attempts to steal another coin from Shuichi and Claire, but they kill her when she does not tell them. A week later, Shuichi leaves, but Claire points out they are a strong team if other monsters show up. Claire tells Shuichi that Elena killed her parents. It is shown six months earlier that Elena had accompanied Shuichi, and the school bag decoration as the same mascot Shuichi had.
Directed by : Hiroki Nakanishi Storyboarded by : Yoshiaki Kyogoku
Rinrin
April 19, 2020 (2020-04-19)
After Shuichi and Claire inspect the uniform, it is clear that Elena killed the others. Claire suspects Elena hid with someone helping her and hope they will catch a scent on them at the train station. After a failed ambush, Elena meets them. It is revealed that despite her powers, Elena is socially incompetent and accepts the truth. Elena finds Claire inside Shuichi.
4
"I Wish I Was Someone Else" Transliteration: "Henshin Ganbō" (Japanese: 変身願望)
Directed by : Ryota Aikei Storyboarded by : Ryota Aikei, Kazuhiro Yoneda
Masahiro Okubo
April 26, 2020 (2020-04-26)
Elena reveals what happened and gives Claire a second coin. Shuichi uses the vending machine to restore his body. The man reveals he is a shapeshifting alien. He explains that hundreds of them are returning to their home planet as streams of living data within the coins, but they were scattered when the ship crashed and has been abandoned. He recruits human Gatherers to find the coins. In exchange for them, he offers the power to transform into any physical form, but should anyone collect 100 coins, he will offer them any power they wish or destroy the planet. Shuichi and Claire accept the mission.
Directed by : Sho Kitamura Storyboarded by : Masao Kawase, Kazuhiro Yoneda
Masahiro Okubo
May 3, 2020 (2020-05-03)
Shuichi and Claire head to the forest, where the warring Gatherers visit. They meet Sanbe, who used the coin for inhuman strength. To forfeit the battle, they spare him. After recruiting Sanbe, Shuichi and Claire examine the photo.
Directed by : Yoshinobu Kasai, Kazuhiro Yoneda Storyboarded by : Hiroyuki Morita
Natsuko Takahashi
May 10, 2020 (2020-05-10)
When Claire invites the victims, they insist on seeing her human form. Claire reveals their partnership, but insists Shuichi to stay safe. Their leader, Koyanagi, reveals she knows Elena and that she was betrayed by a friend, who killed herself and wished for a specific power forcing people to keep secrets. Claire agrees to be initiated. She wears a hair necklace and Koyanagi warns if anyone reveals the secret will die. Subaru finds the wallet.
Directed by : Takashi Ando Storyboarded by : Kazueki Mitaka, Kazuhiro Yoneda
Rinrin
May 17, 2020 (2020-05-17)
Koyanagi reveals she is Elena's former classmate. Shuichi finds Subaru and retrieves Chihiro's wallet. Koyanagi sends Yota and Claire to find the two. As Subaru wounds Shuichi and Chihiro, they regret their weaknesses and fuse themselves into a single monster. Shuichi and Chihiro lose their individual selves, and fuse into a single personality. Elena stops the fight. With their minds separated, they fall unconscious. As Elena and Subaru leave, Shuichi and Chihiro revert to separate bodies.
8
"Shadows in Memory" Transliteration: "Kioku no Kage" (Japanese: 記憶の影)
Directed by : Masashi Abe Storyboarded by : Takaomi Kanasaki
Shinichi Inotsume
May 24, 2020 (2020-05-24)
Shuichi wears the hair necklace. Isao recognizes and learns that Shuichi attended the cram school, although he cannot remember it. Claire berates Chihiro for leaving them. Realizing she is upset, she warns her that she is different from Shuichi to become one with him. Shuichi discovers Abukawa burying a dog after it got hit by a car. Ikeuchi falsely accuses Shuichi for hiding it. He believes the purpose of his form can protect anyone. Chihiro calls Elena, but she explains that the power increases the abilities of two people with the same goal and it is powerful than Shuichi is aware of. The infuriated Elena reveals that she and Shuichi had different paths. Koyanagi reveals the information of the ship.
9
"Staked Claims" Transliteration: "Gekitotsu no Māku" (Japanese: 激突のマーク)
Directed by : Kazuhiro Yoneda, Yoshinobu Kasai Storyboarded by : Hiroyuki Morita
Masahiro Okubo
May 31, 2020 (2020-05-31)
The group come across the previous fight. Opting to avoid enemy territories, Koyanagi leads them around a mountain. Chihiro feels guilty of hiding the information about a monster keeping the coins, but cannot tell the truth about Elena. Claire learns that the territory markers are the ones to turn weaker Gatherers into ambushers. They are ambushed by a giant centipede monster named Morita, who has killed the female Gatherer. Yota saves Koyanagi. After burying the member, they leave. Madoka and his group kill Morita for revenge. When Madoka sees Shuichi, he demands to know what they are.
Madoka offers to steal the coins and grant a wish, though first one of them must die. Claire lays out the options, either one of them dies or the rest live with guilt. Before fleeing, Claire receives an escape plan for Shuichi to set Isao's nerium shrubs ablaze and kill Madoka's group. Claire tries to send Shuichi away, but he asks her for a decision. Ikeuchi abandons the group and is decapitated by the hair necklace. Koyanagi decides Claire scares her now she has seen what she can do. Claire believes she finally knows why Elena gave her another coin, she is wrought with guilt over her actions and desperately wants Claire to save her from herself.
11
"The Price of Resolve" Transliteration: "Ketsui no Daishō" (Japanese: 決意の代償)
Directed by : Michita Shiroishi Storyboarded by : Hiroyuki Morita
Shinichi Inotsume
June 14, 2020 (2020-06-14)
Elena tries to blame the alien for everything, but he insists humans make choices. Claire worries some monsters may have survived so they can gather coins, but Koyanagi blames herself for the massacre and they separately return home. Isao is disturbed by how he accompanied Claire and Shuichi, and that he claimed that he attended cram school. Chihiro attends the same school as Shuichi. Knowing that Abukawa died at the river, Shuichi confronts the alien and demands to know why he chose a mascot costume. He agrees to offer to make him human again if he has a coin to trade, but Shuichi plans to find all coins and restore the world. Shuichi kills Taguchi, a swordsman. The alien recalls about Honoka.
12
"Where the Promise was Made" Transliteration: "Yakusoku no Basho" (Japanese: 約束の場所)
Directed by : Takashi Ando Storyboarded by : Hiroyuki Morita
Rinrin
June 21, 2020 (2020-06-21)
Elena's group learn someone with the power of coins is guarding the ship from other Gatherers. Naoto recalls about when he and his friends attended the cram school. Months earlier, Naoto had dated Aiko, before Honoka vanished. Aiko suggested them not to find her. Kaito followed Aiko and met the alien, who told them about Honoka. Kaito killed Honoka, after learning that she buried the real Aiko. The truth reveals that Aiko killed herself and Honoka took advantage of her death. Kaito overcame the guilt and used a coin. Later, rumors spread about a female ghost forcing people to identify her. Shuichi decided if Kaito was responsible. Back in the present day, Claire finds a doll.
13
"We Two Are One" Transliteration: "Futari de Hitotsu" (Japanese: 二人で一つ)
Directed by : Naotaka Hayashi Storyboarded by : Kazuhiro Yoneda
Shinichi Inotsume
June 28, 2020 (2020-06-28)
Shuichi requests all coins from the group and Claire investigates the house. Their hair necklaces fall off, and Koyanagi agrees to collect all coins for Elena. Elena worries if Shuichi remembers the truth and receives all coins from Chihiro. Claire shows the doll to Elena, causing Shuichi to remember. Elena tries to erase their memory, but he and Claire fight back. Elena tells Shuichi that she killed his parents. The girl appears and Shuichi almost calls her Honoka, but Elena erases their memories and the girl flees. The truth is revealed that Kaito kept all coins and guarded the ship, but by erasing Shuichi's memory. Elena ensured Shuichi was unaware of the ship, keeping him from being targeted unless he remembers. Despite being amnesiac, Shuichi swears to end the game, and goes to the forest with Claire and Sanbe.
Notes
^While Crunchyroll handles distribution in North America, Madman Anime distributes the series in Australia and Wakanim in Europe.