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Main Character
Ren/Kyuta
- Voiced by: Shōta Sometani, Aoi Miyazaki [young] (Japanese), Eric Vale, Luci Christian [young] (English)note
A young boy who runs away from home and ends up accidentally going to the beast world. He meets a beast named Kumatetsu, who is a potential candidate to become lord of the beast world. Kumatetsu ends up making Ren his apprentice and later names him Kyuta.
- The Apprentice: He becomes Kumatetsu's first disciple.
- Awesomeness by Analysis: He discovers his analysis skills when mimicking Kumatetsu's footwork and realizes he is not actually seeing him only hearing him because he knows Kumatetsu's moves that good.
- Badass Adorable: Starts off with the "adorable" part and later fulfills the former after learning his analysis skills.
- Brooding Boy, Gentle Girl: With Kaede. She offers Kyuta comforting words when he undergoes an identity crisise in the middle of the movie, even offering him a bracelet she wore that would help during tough times.
- A Boy and His X: A Boy and His Fuzzy-like creature. Ren's first friend after he ran away was a small, fuzzy creature he named Chiko. Said creature would follow Ren/Kyuta anywhere he went. The credits imply that Chiko may be a reincarnated form of his late mother.
- Child of Two Worlds: As a human who grew up in Jūtengai. This causes an identity crisis once he realizes it in the movie's second arc.
- Children Do the Housework: When Kumatetsu takes the 9-year-old Kyuta to live with him, the house is a mess and Kumatetsu can only cook rice mixed with raw eggs. Kyuta soon assumes responsibility for all the cooking, cleaning and laundry for the following eight years.
- Curtains Match the Windows: Brown hair and brown eyes.
- Hairstyle Inertia: He kept his same Messy Hair from his boyhood.
- Hot-Blooded: He was like this as a kid being brash and very temperamental. Especially after living with Kumatetsu for a while as he adopts this personality fully and along with being filled with teenage angst it's not a surprise that he's this hot-tempered.
- I Choose to Stay: He decides to stay in Tokyo towards the end of the film.
- Ink-Suit Actor: His adult self resembles his Japanese voice actor Shōta Sometani.
- Jerk with a Heart of Gold: Ren/Kyuta is a brash and a angsty teen who is quite bitter about the world, but he is still able to show acts of kindness and generosity such as when he met Kaede. He also cares for Kumatetsu and his other friends in Jutengai.
- Like a Son to Me: Kumatetsu comes to see Kyuta as his surrogate son.
- Like Father, Like Son: He begins imitating Kumatetsu's mannerisms to learn swordsmanship, and after living together so long they naturally rubbed off on each other, but even at the start Kyuta/Ren was a stubborn, hot-headed loner with a chip on his shoulder, just like Kumatetsu.
- Living Emotional Crutch: Implied. The main reason Kumatetsu won the title of Grandmaster was because Kyuta/Ren's "cheering" reignited his spirit.
- Loser Son of Loser Dad: Jiromaru, and later Ichirohiko, mock Kyuta for being raised by Kumatetsu, an oaf and a laughingstock who can't defeat their own father.
- Meaningful Rename: Refuses to tell Kumatestu his real name, Ren, and is therefore called "Kyuta" because he was nine when he met Kumatetsu.
- Messy Hair: Ren has unkempt hair.
- Morality Pet: It's Kyuta/Ren's presence that allows Kumatetsu to work on his skills and attitude of a swordsman.
- Mugging the Monster: When the delinquent girls' boyfriends attempt to fight him in the human world, Kyuta simply beats the crap out of them, forcing the girls to run away from him and Kaede while they still can.
- Never Learned to Read: Kyuta spent eight years away from human school and thus doesn't know how to read things around his age until Kaede teaches him.
- One-Man Army: As a teenager, he can take on and deliver a Curb-Stomp Battle to three delinquents.
- The Power of Hate: His hidden dark power that he experiences as a young child fueled all of his negativity and hatred to the world ever since his mother died. This is played straight when Kumatetsu is seemingly killed by Ichirohiko.
- Power of the Void: The "void" inside him.
- The Protagonist: The movie's primary viewpoint character.
- Raised by Dudes: Downplayed. Ren/Kyuta was raised by and remembers his mother but for the rest of his childhood he was raised by three beast men. And he later is taken in by his biological father.
- Raised by the Supernatural: Ren/Kyuta was raised by three beast men.
- Raised by Wolves: A humanoid bear with help from a pig and monkey.
- The Runaway: The kickoff to the story is the fact that Ren/Kyuta ran away from home after his mother's death and his father supposedly abandoning him to his extended family.
- Stock Shōnen Hero: He starts out a brash and simpleminded Kid Hero with Messy Hair who only wants to become stronger. As he grows older, he keeps his attitude, but becomes more mature and it's his love for his beloved ones that allows him to defeat evil.
- Stranger in a Familiar Land: Subverted upon his return to the human realm. He doesn't waste any time becoming acclimated to the atmosphere in Tokyo thanks to him befriending Kaede and reconnecting with his father.
- Token Human: The only human in the beast world. Subverted, when it's revealed that Ichirouhiko is also a human.
- Took a Level in Badass: Starts off as a weak kid who can barely hold a sword to save his life. Come the Time Skip he has grown into an incredibly strong person.
- Trademark Favorite Food: Ham omelettes are his favorite meal.
- Underestimating Badassery: When Kyuta/Ren returns to the human world as a teen and encounters the delinquents who ridicule Kaede, their boyfriends seriously underestimate how powerful he is.
- Unstoppable Rage: After his foster father Kumatetsu is seemingly killed he then begins to lose his mind to kill Ichirohiko. He only manages to calm down after his little mouse pet gets to him.
- Vitriolic Best Buds: A parent-child with Kumatetsu — despite their constant arguing and insults to each other, both have a deep bond and love for each other.
- You Can't Go Home Again: At the end of the film, Kyuta/Ren decides to leave Jūtengai forever to be with Kaede and his father.
Characters from the Beast Kingdom
Kumatetsu
- Voiced by: Kōji Yakusho (Japanese), John Swasey (English)note
Kumatetsu is a potential successor to the throne of the Beast Kingdom. He has to choose someone to be his apprentice and he ends up choosing a human boy named Ren (and later names him Kyuta).
- The Alcoholic: Implied. Before Kyuta/Ren did some much needed cleaning, Kumatetsu's house was filled with bottles of booze.
- Always with You: Played very literally. Kumatetsu is reincarnated as the god of a sword in order to fill in the void inside Kyuta, so Kumatetsu will forever live on inside of Kyuta. They can still talk to each other and they will literally always be together.
- Arrogant Kung-Fu Guy: While Kumatetsu has the skill, he has little etiquette or humility.
- Attack! Attack! Attack!: His philosophy not only on combat but with any of life's challenges, to the point that he can't comprehend hesitation or self-doubt in others. In the first duel of the film, he at least has the ego to let Iozan throw a few punches of his own, but in the final competition he goes all out on Iozan from the word go.
- Bears Are Bad News: Zig-zagged. When he first finds Ren on the street, he towers over the terrified boy, leering with Red Eyes, Take Warning and forcefully taking his small face in his massive paw. His physical power and sheer size are rivaled only by Iozan, and his temper and roughness are unmatched. However, he makes a surprisingly good mentor and father figure, and though he may bellow and roar, he's a Jerk with a Heart of Gold underneath it all.
- Big Ol' Eyebrows: Kumatetsu has thick, black eyebrows.
- Big Eater: He and Kyuta often compete on who can eat the fastest
- Boisterous Bruiser: He's a loud, violent, skilled warrior.
- Cast from Stamina: Assuming his huge beast form makes him much larger and more powerful, but quickly burns through his energy and leaves him exhausted.
- Children Raise You: Taking Kyuta under his wing resulted in such an improvement for Kumatetsu's attitude and fighting style that other characters wonder which one of them is really the teacher.
- Curtains Match the Windows: He has red fur and red eyes.
- Determinator: Once he sets his mind to something, there's no turning back. He himself boasts about this as a point of pride.
- Deuteragonist: Besides Kyuta/Ren's attempts to define his identity, the movie is also about Kumatetsu developing discipline and growing as an individual.
- Fiery Redhead: He has red fur and has quite the temper.
- Hair-Trigger Temper: He's noted by everyone to lose his temper easily.
- Hot-Blooded: He's a very hotheaded beast and is always screaming at the top of his lungs.
- Hulking Out: It's implied that all beasts have this but Kumatetsu fully utilizes this the most. He bulls up into a bigger form of himself and has immense strength.
- Idiot Hero: Frequently referred to as an "idiot" by almost everyone.
- Ink-Suit Actor: Kumatetsu bears a resemblance to his actor Kōji Yakusho.
- Jerk with a Heart of Gold: He's hot-tempered, self-centered, and arrogant but has proven to be caring and good-hearted.
- Lightning Bruiser: The strength of a bear and the agility and speed of a monkey.
- Manchild: He's quite immature despite being an adult.
- Meaningful Name: The "kuma" part of his name means "bear".
- Men Can't Keep House: Before Kyuta/Ren came to live with him, Kumatetsu's house was a complete pigsty. Filled with empty bottle, pillows, and dust.
- Mighty Roar: Kumatetsu is always yelling for no reason but during the final fight with Iouzen when he's down and Kyuta encourages him to get back up he states that he's not going to lose and let's out a giant roar the even allows him to float in the air while doing so.
- Mentor Occupational Hazard: After being critically injured by Ichirôhiko, Kumatetsu decides to be reincarnated as a sword that would help Kyuta defeat him, though he is still alive inside of Kyuta.
- Papa Wolf: He gives up his physical form to become a god in order to fill the void in Kyuta so he can aid him and always be with him.
- Parental Substitute: Acts as a father figure to Kyuta.
- Red Oni, Blue Oni: He is the red to Iouzen and Kyuta's blue.
- Unskilled, but Strong: While he's stated to be physically stronger than Iouzan, he lacks actual discipline, and even his inexperience child apprentice has a better grasp of evasion and tactics.
- Vitriolic Best Buds: A parent-child with Kyuta/Ren — despite their constant arguing and insults to each other, both have a deep bond and love for each other.
Tatara
- Voiced by: Yo Oizumi (Japanese), Ian Sinclair (English)note
A monkey beast who is a close friend of Kumatetsu.
- Big Ol' Eyebrows: Tatara has thick, grey eyebrows.
- Childhood Friends: Seems to be this with Kumatetsu, as he reminisces about how similar to Kyuta the bear was as a child.
- Defrosting Ice King: Tatara starts off a standoffish, indifferent jerk to Kyuta/Ren, but after seeing that the boy isn't as weak as he assumed, he grows closer.
- Hidden Depths: He seemingly participates the least in training or raising Kyuta, but when he does chip in he has remarkable insight into Kumatetsu's character and Kyuta's needs.
- Jerk with a Heart of Gold: He's a jerk to Kyuta/Ren, but he proves to have a good heart.
- Lazy Bum: He spends most of his screen time laying around, and has nothing better to do than hang out at Kunatetsu's place. Kumatetsu and Hyakushubo also spend their days in much the same way, but the former trains hard and has ambition while the latter is a monk who dedicates himself to guiding others, and both do more to raise Kyuta. Tatara simply loves living without any responsibility or judgement, just passing time as he sees fit.
- Silly Simian: A monkey beast who provides some comic relief.
- So Proud of You: Both him and Hyakushūbō remark on how proud they are of Kyuta/Ren when he goes to face off against an enraged Ichirōhiko in the human realm.
Hyakushūbō
- Voiced by: Lily Franky (Japanese), Alex Organ (English)note
A pig beast, monk, and close friend of Kumatetsu.
- Badass Pacifist: As a monk he is never violent, but he fearlessly scolds three frightening wolves for bullying Kyuta.
- Brainy Pig: He's a pig beast, and easily the wisest in his group of friends compared to the brash, immature Kumatetsu and the snarky Tatara.
- Dark Is Not Evil: He wears black monk robes and is definite Nice Guy.
- Nice Guy: Hyakushūbō has shown to be thoughtful, kind, and friendly. He dedicates most of his time to helping Kunatetsu and Kyuta, deapite both being difficult and often ungrateful.
- Only Sane Man: The only among himself, Tatara, and Kumatetsu who actually has some knowledge on how to properly raise and teach Kyuta/Ren.
- O.O.C. Is Serious Business: Throughout the entire movie, Hyakushūbō has shown to be the most patient and understanding of Kyuta/Ren, never once raising his voice or the like. So when he yells at Kyuta/Ren, calling him an "idiot" for deciding to go off and fight Ichirōhiko, it shows just how desperate he is to keep Kyuta/Ren safe.
- Parental Substitute: To Kyuta, before Kumatetsu takes over. He rescues Kyuta from the wolves and promises to look after him, despite most beasts' fear and distaste for humans, and then encourages Kumatetsu to do the right thing and bring the boy home. When Kyuta begins his apprenticeship, it is Hyakushubo who supports and spends time with Kyuta, while encouraging the stubborn Kumatetsu to do the same.
- So Proud of You: Both him and Tartara remark on how proud they are of Kyuta/Ren when he goes to face off against an enraged Ichirōhiko in the human realm.
- Team Mom: He selflessly guides Kyuta and Kumatetsu as individuals and on their journey as master and apprentice, whereas those two bicker constantly and Tatara laughs from the sidelines
- "The Reason You Suck" Speech: Gives a few of these, albeit gently. He stands up to three cowardly wolves with nothing but his harsh words, constantly berates Kumatetsu for being oblivious and stubborn, and chews Kyuta out for seeking vengeance.
Chiko
A small, fuzzy beast that's always seen with Ren/Kyuta.
- Ambiguous Gender: Chiko's gender is difficult to pinpoint. Given the lack of physical characteristics, one can assume either way. "Chiko" is a name for Japanese males, but the voice actors are female. And the end credits imply Chiko is a reincarnation of Ren's deceased mother; but reincarnation can mean someone can come back as a male or a female.
- Head Pet: Chiko is usually seen on Ren/Kyuta's head.
- Light Is Good: Chiko has white fur and is an adorable, friendly creature.
- Reincarnation: Implied, but not confirmed. The credits imply it may have been the reincarnated form of his mother.
- Ridiculously Cute Critter: An unidentified fuzzy rodent-like thing Ren picks up at the beginning of the movie.
- Spell My Name With An S: The official name spelling is "Chiko" but some spell it as "Chico".
- Undying Loyalty: Chiko is never seen far away from Ren/Kyuta. Ever since they first met, Chiko has been by the boy's side through the latter's trials and tribulations.
- The Unintelligible: Chiko can communicate only in squeaks.
Iouzan
- Voiced by: Kazuhiro Yamaji (Japanese), Sean Hennigan (English)note
Iouzan is a father of two sons and a potential successor to the throne of the beast world.
- Action Dad: The father of two and a professional swordsman.
- Foil: Iouzan is the disciplined, respectful, busy-scheduled, kindhearted warrior in contrast to Kumatetsu's undisciplined, haughty, open-scheduled, violent warrior.
- Full-Boar Action: He's an anthropomorphic wild boar, and sometimes he takes a quadruped combat stance when fighting.
- Graceful Loser: He accepts his defeat by Kumatetsu and praises him for having raised a good son. He also becomes very angry when Ichirōhiko tries to kill Kumatetsu to hand his father the victory.
- Hypocrite: He berates Kumatetsu for taking in a human boy because humans become dangerous when they are corrupted by evil. Turns out Iouzan himself adopted the human Ichirōhiko when he found him, although the problem was that it was more complicated than that. However, Iouzan's mishandling of his son caused Ichirōhiko to be the one who became corrupted.
- Nice Guy: He's been noted to be a kind man.
- No Good Deed Goes Unpunished: He rescues the orphaned Ichirohiko and raises him as a beast and his son out of the goodness of his heart, giving him the same love and respect as his true son, and tries to protect him by lying about the boy's humanity. These good intentions serve as a catalyst for the final conflict of the story and nearly have profound repercussions on both the worlds of beasts and humans.
- Parents as People: He really does love his sons, but is usually too busy with training and his other responsibilities to spend time with them. He thought he could keep the darkness from Ichirouhiko because he was the one raising him. He takes note on how arrogant he was.
- Privileged Rival: Unlike Kumatetsu who has never received proper training in his life and never had any disciple before Kyuta, Iouzan has a very disciplined style and teaches a proper school of disciples.
- The Rival: He is Kumatetsu's rival in being the next Grandmaster.
- Where Did We Go Wrong?: He admits that he thought raising Ichirohiko properly would keep him from becoming a monster. Things don't exactly turn out that way, and Iozan is distraught.
Ichirōhiko
- Voiced by: Mamoru Miyano, Haru Kuroki [young] (Japanese), Austin Tindle, Morgan Berry [young] (English)note
Iouzan's older son.
- Berserk Button: Anyone claiming that they are stronger than his father.
- Chick Magnet: A group of girls are seen cheering for him when he was practicing swordsmanship as a child.
- Condescending Compassion: He defended Kyuta from Jiromaru's bullying because he thought the human boy was "too weak" to ever do harm to anyone.
- Curtains Match the Windows: Blue hair and blue eyes.
- The Dutiful Son: He admires Iozan to the point of hero worship, training hard to please and emulat him, and as a child chides Jiromaru for not behaving as their father would like.
- Eerie Pale-Skinned Brunette: He has black hair and very pale skin and he's susceptible to The Corruption.
- Fangs Are Evil: He has very sharp fangs and he becomes the main villain of the movie after he's corrupted by darkness.
- Fantastic Racism: He thinks humans are inferior to beasts and hates Kumatetsu for taking Kyuta as protege. Also double as Boomerang Bigot.
- Fat and Skinny: The lithe and trim Skinny to Jiromaru's round and chubby Fat.
- Foil: To Kyuta/Ren. This is pointed out multiple times by subtle allusions to Moby Dick. Both are a human boys being raised by Beasts, but that's only the beginning.
- Kyuta follows Kumatetsu to the beast realm as a child after running away from a loving family, while Ichirohiko is found as a baby who was abandoned by his parents.
- Ichirohiko is a dignified and popular Chick Magnet, but Kyuta looks like a shaggy, shabby ruffian, something that gets pointed out by humans.
- Kyuta apprentices under and bickers constantly with the brutish Kumatetsu, who struggles to teach him swordsmanship and be a parental figure. Ichirohiko, on the other hand, is raised by Iozan, who is a loving father and ideal master.
- Kyuta spends all day every day with Kumatetsu and his few acquaintances, though they sometimes bully and tease him, and Ichirohiko has a somewhat distant relationship with his father due to the latter's busy schedule, and he has large groups of friends who idolize him.
- Kyuta is aware of and constantly reminded of his humanity, but Ichirohiko is led to believe he is a Beast and almost everyone around him is unaware of the truth. Kyuta adjusts well to the Beast realm, but the older Ichirohiko gets the more insecure he becomes.
- Kyuta is clumsy and weak at first, but at the beginning of the story Ichirohiko is already a master warrior with powerful telekeniss.
- Ichirohiko gives into the human darkness in his heart gradually over time until it consumes him entirely, but Kyuta resists it every time.
- During their battle, Ichirohiko emanates a blue aura and fights with a whale made of what appears to be liquid energy, while Kyuta, with Kumatetsu in his heart, burns red and his sword blazes with flame.
- Finally, after their battle Ichirohiko presumably stays in the Beast realm with his beast family, but Kyuta returns home to the human world.
- Foolish Sibling, Responsible Sibling: Zig-Zagged. Initially Ichirōhiko is introduced as the Responsible and Jiromaru as the Foolish given the former's chastising of the latter for bullying Kyuta/Ren. However, after the Time Skip, the roles are reversed with Jiromaru giving equal respect to Kumatetsu and his father, but Ichirōhiko (who has become more bitter and arrogant), haughtily thinks Kumatetsu and Kyuta/Ren are inferior.
- Happily Adopted: Zigzagged. Ichirōhiko loves his adoptive family very much and they see him as nothing less than a son and brother. Unfortunately, the inability to cope with his adopted status, much less an Interspecies Adoption status, is what sends Ichirōhiko into mental and emotional turmoil.
- Human All Along: He is human, something he resents considering how the rest of the Beast Kingdom behaves towards humanity.
- Mage in Manhattan: Or rather Psychic in Tokyo, when he goes after Kyuta.
- Red Eyes, Take Warning: The whale form he takes on in the climax has red eyes.
- Shadow Archetype: While he and Kyuta/Ren are humans who suffered from loneliness and have been tempted by the darkness in their hearts, Ichirōhiko represents what could've become of Kyuta/Ren had he let the darkness totally consume him.
- Sham Supernatural: Ichirohiko is a human adopted by a family of anthropomorphic boars and constantly wears a hat that disguises his head to look like that of a Beast Man in order to fit in better in the Beast Kingdom.
- Took a Level in Jerkass: He is introduced as a reasonably well-mannered, if slightly insensitive. The Time Skip has him becomes a disrespectful, arrogant man who even went so far as to viciously beat up Kyuta and later stab Kumatetsu.
- Used to Be a Sweet Kid: While he was Innocently Insensitive to Kyuta/Ren, he never bullied him and chastised his brother for doing so. As an adult, he comes to vehemently hate both Kyuta/Ren and Kumatetsu, dismissing both as inferior, especially to his father.
- "Well Done, Son" Guy: Ichirōhiko greatly admires his father and wants to be exactly like him when he grows up.
- Woobie, Destroyer of Worlds: The big reason why he let the darkness in his heart consume him was how lonely and inferior he felt after he learned he was a human.
Jiromaru
- Voiced by: Kappei Yamaguchi, Momoka Ono [young] (Japanese), Jessie James Grelle, Brittney Karbowski [young] (English)note
Iouzan's younger son.
- Big Brother Worship: Jiromaru greatly admires his brother's strength.
- Big Ol' Unibrow: He has a thick, brown unibrow.
- Bully Turned Buddy: He first starts off as a bully to Kyuta/Ren because he was a weak human. After Kyuta Took a Level in Badass and beat him, Jiromaru took a liking to him and became his friend.
- Curtains Match the Windows: Jiromaru has brown hair and eyes.
- Defeat Means Friendship: After Kyuta defeats him in a minor scuffle in their childhood, Jiromaru is impressed and the two become friends.
- Delinquent Hair: As a teen, he sports a pomp hairstyle.
- Fat and Skinny: The round and chubby Fat to Ichirōhiko's lithe and trim Skinny.
- Foolish Sibling, Responsible Sibling: Zig-Zagged. Initially Ichirōhiko is introduced as the Responsible and Jiromaru as the Foolish given the former's chastising of the latter for bullying Kyuta/Ren. However, after the Time Skip, the roles are reversed with Jiromaru giving equal respect to Kumatetsu and his father, but Ichirōhiko (who has become more bitter and arrogant), haughtily thinks Kumatetsu and Kyuta/Ren are inferior.
- Might Makes Right: His childhood opinion of worth is based entirely on strength. He attempted to beat up Kyuta for being weak, but warms up to him immediately after the human defeats him.
- Reformed Bully: He picked on Kyuta when they were kids, only to become his friend after Kyuta managed to beat him. When they're teenagers, Jiromaru has become a very chill and friendly guy.
- Took a Level in Kindness: After being defeated by Kyuta/Ren, Jiromaru goes from a bullying brat to a longtime friend.
- Undying Loyalty: Witnessing Ichirohiko's corruption and learning of his adoption and humanity changes nothing for Jiromaru. They are still brothers, and he doesn't care what anyone thinks.
The Grandmaster
- Voiced by: Masahiko Tsugawa (Japanese), Steve Powell (English)note
The Grandmaster of the Beast Kingdom, who is about to reincarnate as a deity.
- Bunny-Ears Lawyer: Almost a literal example, as he's an anthropomorphic bunny. He's a goofy old man who is nonetheless universally respected within the kingdom.
- Irony: It takes him nine years to decide that he wants to be the god of decisiveness.
- Not So Stoic: Constantly gives the impression of omnipotence and enlightenment, always knowing just where to be and just what to say. When a stray sword flies his way and sticks in his chair near his head, he tenses up before slumping down with a relieved sigh.
- Reasonable Authority Figure: Giving Kumatetsu a chance to succeed him at all, considering the former is initially unpopular due to his brash attitude and lack of discipline. He also lets Kumatetsu keep Kyuta/Ren in the Beast Kingdom.
- Trickster Mentor: Subtly and editorially guides Kumatetsu to being a better mentor for Kyuta, which in turn makes Kyuta a better person, thus making him worthy of succeeding him as the Lord of the Beasts. He could have just told Kumatetsu what he needed to do, but he likely knew the bear was too stubborn and dense to take advice outright.
Characters from the Human World
Kaede
- Voiced by: Suzu Hirose (Japanese), Bryn Apprill (English)note
A young teenage girl Kyuta/Ren befriends after the Time Skip.
- Brooding Boy, Gentle Girl: With Ren/Kyuta. He goes through an identity crisis in the middle of the movie, Kaede offers him a Cooldown Hug and comforting words to help him. She even gives him a bracelet she wore, that would her through similar emotional troubles.
- Cooldown Hug: She gives one to Ren/Kyuta after he is almost overwhelmed by his void because he rejects both his father and Kumatetsu.
- Cute Bookworm: She's a beautiful girl who loves to read.
- Early-Bird Cameo: She appears as a child in a blink-and-you'll miss it scene at the beginning of the movie among several people on the street.
- He Is Not My Boyfriend: She gets teased with this by her schoolmates who see her talking with Ren from across he school fence.
- Implied Love Interest: It's never outright stated of she or if Kyuta/Ren have romantic feelings for each other, but they do form a strong bond and there are some moments between them that can be interpreted as romantic.
- Ink-Suit Actor: She greatly resembles her Japanese actress Suzu Hirose.
- Morality Chain: The reminder of her You Are Not Alone speech is enough to snap Ren/Kyuta out of his anger when Ichirôhiko fatally stabs Kumatetsu.
- Nerves of Steel: She doesn't hesitate when giving Ichirôhiko a brutal call out for how easily he consumes to his own darkness.
- Nice Girl: Kaede has shown to be a sweet, thoughtful, and encouraging person.
- Raven Hair, Ivory Skin: She has black hair and light skin.
- Unfazed Everyman: Despite having just made aware about the existence of the beast world upon Ichirôhiko's attack on Shibuya, she takes everything in stride and even takes steps to help Ren strategize.
- "Well Done, Daughter!" Girl: She admits to Ren/Kyuta that she only gets good grades to make her parents happy.
- You Are Not Alone: She reassures Ren that other people (including her) share his feelings of rage, resentment, and loneliness, which outright stops him from succumbing to the darkness.
Ren's Mother
- Voiced by: Kumiko Aso (Japanese), Jessica Cavanagh (English)note
Ren's deceased mother.
- Missing Mom: She dies in an accident, and with her ex-husband missing, her son is left an orphan.
- Posthumous Character: Ren’s mother is already dead by the start.
- Small Role, Big Impact: Her death in a traffic accident caused her son to run away from home and meet Kumatetsu.
- Unnamed Parent: Her actual name is unknown.
Ren's Father
- Voiced by: Keishi Nagatsuka (Japanese), Chuck Huber (English)note
Ren's missing father.
- Absurdly Youthful Father: Looks about the same age if not younger than his son.
- All There in the Manual: The reason why he and Ren’s mother divorced, according to the novelization, was because of Ren’s uncle from the head family who forced them to. It is also implied that Ren’s mother’s family didn’t seem to like him very much.
- Daddy Had a Good Reason for Abandoning You: He never meant to abandon Ren. Ren's father wasn't informed of Ren's mother's death until after he had already disappeared. After he found out what happened, he tried his best to find Ren. When they reunite, he's overjoyed to see his son again and wants to live together with him.
- Disappeared Dad: Apparently given his ex-wife's family were unable to contact him. It turns out Ren's father wasn't informed of what had happened to Ren's mother until after his son had already disappeared into Jūtengai.
- I Will Find You: He told Ren he spent years searching for him even after the police gave up.
- Nice Guy: When Ren officially meets his father, the man is a kind person who is overjoyed to be reunited with his long-lost son.
- Unnamed Parent: His actual name is unknown.
- Walking Spoiler: Anymore detail other than him being Ren's apparently absent father would spoil the second half of the movie.
