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Primary characters
Kazuki Shikimori
Kazuki Shikimori
Voiced by: Daisuke Sakaguchi (Japanese), Blake Shepard (English)

- Accidental Pervert: In one hilarious incident, he accidentally walks into a room where Yuna is changing. While he quickly steps out, he realizes shortly afterwards that she was changing in his room.
- Apologizes a Lot: Kuriko tells Kazuki he does this too much in one episode, and his response is to apologize.
- Back from the Dead: The point of the second half.
- Balanced Harem: For the most part. None of them have a significant lead over the other girls.
- Double Standard: Rape, Female on Male: Lampshaded.Kazuki: Stop, or I will scream!Kuriko: That's a girl's line.
- Heroic Lineage: At the beginning of his second year it is revealed that he is descended from not only the most powerful of eastern mages, but the most powerful of western mages.
- Heroic Sacrifice: Kazuki sacrifices his last spell and subsequently his life to save Yuuna's.
- Intangibility: As a ghost. Episode 15 subverts this however.
- Lover Tug-of-War: Poor Kazuki.
- Marshmallow Hell: Happens at least once to him courtesy of Kuriko.
- Nice Guy: He even uses his magic to make it snow on a hot summer day just to make a girl he literally just met to stop crying so her family wont move away.
- Oblivious to Love: In episode 6, when his dad calls him asking if he has has a girlfriend, he says "of course I don't". Much to the shock of Yuna, Kuriko, and Rin. I guess they just aren't trying hard enough.
- Our Hero Is Dead /The Hero Dies: The Wham Episode.
- Polyamory: Implied at the end of the series after Kazuki somehow manages to split himself up into multiple copies. While none of the girls seemed to mind it, Yuna seems to only want one of him, and she wants him to herself.
- Reduced to Dust: When he uses his last spell.
- Super Weight: Kazuki is a Type 4, his magic is so powerful it can affect the entire city he lives in and alter normal physics.
- Thanks for the Mammary: In episode 15 to Rin. She wasn't very happy about it.
- Unskilled, but Strong: Kazuki's Superpowerful Genetics makes him the mage equivalent to a rocket launcher. That said, he's only able to use eight spells before he dies.
- Unwanted Harem
- Wham Episode: Episode 12. Kazuki uses his last spell and turns to ash, although he "survives" as a ghost.
Yuna Miyama
Yuna Miyama
Voiced by: Hitomi Nabatame (Japanese), Jessica Boone (English)

- All for Nothing: Episode 6. All that fuss she went through to impress Kazuki's parents? Yeah... turns out they wont be coming.
- Blonde, Brunette, Redhead: The redhead.
- Burning with Anger: In episode 13. When she sees Kazuki with Shino. Complete with Glowing Eyes of fire!
- Childhood Friend Romance: Depending on your POV, Yuna and Yamase are both Victorious since Kazuki being split up into clones means they could both have one to themselves. Yuna doesn't like the idea, but Yamase seems happy to have one of him.
- Childhood Marriage Promise: Some flashbacks reveal this.
- Clingy Jealous Girl: Becomes this due to Flanderization.
- Feminine Women Can Cook: She seems to be of this mindset.
- Fiery Redhead: Normally she's a very nice girl. But if she sees Kazuki is with another woman, and that will reveal a completely different side of her.
- Flying Broomstick: In the intro.
- Girlish Pigtails: An odd instance where she has Rapunzel Hair as well as two small pigtails.
- Glowing Eyes of Doom: Yuna seems to display these from time to time.
- Gratuitous English: In episode 9, while Kazuki is away on a hot springs trip with Kuriko, Yuna reads a variety of books in an attempt to distract herself. Then she reads an English book, and has an Imagine Spot where she thinks they're doing naughty things.Yuna: Tom has a girlfriend, her name is Nancy...Yuna: (gets angry) Kazuki-san has a girlfriend, her name is Kuriko-san.
- Housewife: Not actually, she more fits the typical "housewife" archetype for a harem series.
- Idiot Hair
- Love at First Sight: She fell in love with Kazuki when she first met him as a child.
- Magical Girlfriend: Just like basically all the main girls.
- New Transfer Student: Transfers to Aoi Academy to become Kazuki's wife.
- Nice Girl
- Prehensile Hair: Yuna and Kuriko engage in a spot of ahoge wrestling. Yuna's also functions as a Kazuki radar.
- Rapunzel Hair: Has waist length hair.
- The Rival: Rin, Kuriko, and Yuuna, though they outgrow it to an extent.
- Rose-Haired Sweetie: She's a very nice girl with pink hair. She's also the only one who actually cares for Kazuki from the very beginning instead of just being interested in his genes.
- Single-Target Sexuality: She only have eyes on Kazuki since the beginning.
- Smitten Teenage Girl: So much so that she even first introduced herself as "Yuna Shikimori" to the rest of Kazuki's class.
- Spell My Name with an "S": Yuna/Yuuna.
- Stalker with a Test Tube: Inverted, She's the only one who actually cares for Kazuki from the very beginning instead of just being interested in his genes.
- True Love's Kiss: Her kiss was the one to bring him back to his human form.
- Violently Protective Girlfriend: After learning that Nakamaru had less than pure motives for checking up on Kazuki in the nurse's office, she beats him up a little bit when he's caught spying on Kazuki again.
- You Gotta Have Blue Hair: Pink hair.
Kuriko Kazetsubaki
Kuriko Kazetsubaki
Voiced by: Yuki Matsuoka (Japanese), Tiffany Grant (English)

- All for Nothing: Episode 6. All that fuss she went through to impress Kazuki's parents? Yeah... turns out they wont be coming.
- Alliterative Name: Kuriko Kazetsubaki
- Barbie Doll Anatomy: Averted in episode 19 when you see nipples on Kuriko and Yamase.
- Blonde, Brunette, Redhead: The blonde.
- Childhood Friend Romance: This Unlucky type is debatable, as he splits himself into multiple persons after becoming human, and Kuriko mentions keeping 5 or 6 of them to herself while giving Yamase one, to which she's perfectly okay with.
- Clothing Damage: In one episode, a summoned monster manages to claw through Kuriko's blouse and bra without scratching her skin.
- Entitled to Have You: More of a "Who they are" instance. Initially, she only wants Kazuki's genes, so she seems quite content with using her body, charm, or her family's resources to seduce Kazuki.
- Gainaxing: Mandatory for a Ms. Fanservice to bounce from time to time.
- Gold Digger: At the beginning of the story, Kuriko's only interest in Kazuki is to obtain his genes for the wealthy and influential Kazetsubaki family and the stature that goes with being the mother of a powerful sorcerer.
- Magical Girlfriend: Just like basically all the main girls.
- Mrs. Robinson: Downplayed. She's only about 1 or 2 years older than Kazuki.
- Ms. Fanservice
- Noblewoman's Laugh
- Of Corsets Sexy
- Ojou: A western type.
- Prehensile Hair: Yuna and Kuriko engage in a spot of ahoge wrestling. Yuna's also functions as a Kazuki radar.
- Rapunzel Hair: Has waist-length hair.
- Replacement Goldfish: Inverted. The ghost "child" Elizabeth takes Kuriko as a replacement mother.
- The Rival: Rin, Kuriko, and Yuuna, though they outgrow it to an extent.
- Single Woman Seeks Good Man: She eventually turns into this.
- Stalker with a Test Tube: Initially, big time.
- Stealth Hi/Bye: Often she will appear out of nowhere into Kazuki's arms or lap right in front of Yuna.
- Student Council President: She's a member of the student government.
- The Tease: She's actually into Kazuki, but she enjoys being a shameless flirt with him too. Usually it's to tease Yuna.
- The Vamp: At first, she tries to seduce Kazuki simply for his genes. She grows out of it later though.
- You Remind Me of X: When Elizabeth sees Kuriko, who resembles Elizabeth's mother, lift up a helmet, it reminded her of a knight that guarded her and Elizabeth adopts Kuriko as her new mother.
Rin Kamishiro
Rin Kamishiro
Voiced by: Yuka Inokuchi (Japanese), Kim Prause (English)

- Action Girl: She's a sword-wielding mage.
- All for Nothing: Episode 6. All that fuss she went through to impress Kazuki's parents? Yeah... turns out they wont be coming.
- Blonde, Brunette, Redhead: The brunette. If you subscribe to the Purple Is the New Black mindset.
- Curtains Match the Window: Purple hair and eyes, albeit in different shades.
- Defrosting Ice Queen: She starts out rather cold towards Kazuki, initially she would rather kill him than be married to him. She however warms up to him over time.
- Feuding Families: With Sayumi's family. She doesn't play a huge part in it though.
- Girlish Pigtails
- Hime Cut: Level bangs, very short sidelocks, and Rapunzel Hair in the back.
- Katanas Are Just Better: She wields a katana.
- Kimono Is Traditional: To further sell the Yamato Nadeshiko style.
- Lethal Chef: Kazuki is the only one who can eat her horrendous cooking, and is totally honest about it.
- Magic Knight: She can use both magic and fight with a sword.
- Magical Girlfriend: Just like basically all the main girls.
- Meaningful Name: Rin's name is spelled with this kanji 凜, which means "cold, strict, severe". Describes her initially quite well.
- Ojou: A Japanese-type.
- Rapunzel Hair: Hair goes past her back.
- The Rival: Rin, Kuriko, and Yuuna, though they outgrow it to an extent.
- Single Woman Seeks Good Man: Initially, she would rather kill Kazuki who in her words, has bad grades, no athletic prowess, and no redeeming values. However, as the story progress, she gradually softens up to Kazuki and even begins to smile after witnessing his kindness and compassion towards others, including herself.
- Stalker with a Test Tube: Initially.
- Yamato Nadeshiko: She's a katana wielding, samurai-esque girl.
- You Gotta Have Blue Hair: Purple hair.
Supporting characters
Chihaya Yamase
Chihaya Yamase
Voiced by: Mai Nakahara (Japanese), Luci Christian (English)

- Barbie Doll Anatomy: Averted in episode 19 when you see nipples on Kuriko and Yamase.
- Childhood Friend Romance: Depending on your POV, Yuna and Yamase are both Victorious since Kazuki being split up into clones means they could both have one to themselves. Yuna doesn't like the idea, but Yamase seems happy to have one of him.
- Idiot Hair
- Put on a Bus: She has a tendency to appear, then disappear for a while throughout the series.
- We Hardly Knew Ye: Subverted, Yamase is introduced in one episode, then seems to be promptly forgotten. She shows up again in later episodes, and she gets much more screen time and character development.
Dr. Haruaki Akai
Dr. Haruaki Akai
Voiced by: Kouji Tsujitani (Japanese), Jason Douglas (English)

- All Love Is Unrequited: He's quite smitten with Kaori, and sometimes comments to her that he has a "special bed" in the nurse's office just for her.
- Bishōnen: In a sort of Nerds Are Sexy kind of way.
- Labcoat of Science and Medicine: He's a doctor.
- School Nurse: More like a doctor to be specific.
- Secret Keeper: He knows how to restore Kazuki's body, although he does not reveal the information to Yuna, Kuriko, or Rin.
Shino Akai
Shino Akai
Voiced by: Yoshino Takamori (Japanese), Monica Rial (English)

- The Collector: Shino seems to be a bit too obsessed at trying to capture Kazuki as a ghost.
- Old School Building: Shino lures Kazuki here when she first attempts to capture him. Yuna destroys it in a fit of jealousy.
- Ship Tease: It is hinted that she has feelings for Kazuki since her brother had asked her why she kept hesitating to put Kazuki into her collection, even though she could have done so at any time.
- Your Soul Is Mine: What she wants with Kazuki.
Elizabeth
Elizabeth
Voiced by: Kimiko Koyama (Japanese), Sasha Paysinger (English)

- Cool Crown: She wears a little circlet.
- Cute Ghost Girl
- Hair-Trigger Temper: She seems to get mad easily, and then starts to use her magic to destroy things in anguish.
- Little Miss Badass
- Ojou: She was once a member of a noble family during the Holy Roman Empire.
- Token Mini-Moe
- You Gotta Have Blue Hair: Light purple hair.
Karei Hirosaki
Karei Hirosaki
Voiced by: Emi Shinohara (Japanese), Kelly Manison (English)

- Meganekko
- Mysterious Veil: Not mysterious per se, but she wears a veil.
- Nice Hat
- Widow's Weeds: She is always seen wearing a sexy, black funeral outfit.
Kaori Iba
Kaori Iba
Voiced by: Junko Noda (Japanese), Christine Auten (English)

- Apathetic Teacher: She spends more time playing video games than actually teaching.
- Boyish Short Hair
- Cute Little Fang
- Gamer Chick: She plays video games a lot. Even during class.
- Womanchild: She seems like a student herself, as she rarely if ever truly tries to exercise control over the class of 2-B.
Class 2-B
Yukihiko Nakamaru
Yukihiko Nakamaru
Voiced by: Ryou Naitou (Japanese), Chris Ayres (English)

- Accidental Pervert: In episode 8. While chasing a boy around the school, he just so happens to open a door to a girl's changing room.
- Crazy Jealous Guy: He is extremely jealous of Kazuki's relationship with Yuna and tries to exploit Kazuki's abilities for his own personal gain.
- False Friend: He pretends to be Kazuki's best friend, but is really only in it for Yuna.
- Gone Horribly Wrong: In every case, his schemes against Kazuki always backfire, hurting him the most.
- Nosebleed: Episode 11.
- Red Eyes, Take Warning: In episode 8.
Sayumi Morisaki
Sayumi Morisaki
Voiced by: Akeno Watanabe (Japanese), Kaytha Coker (English)

- Feuding Families: With Rin's family. She however does not take much part in it.
- Kung-Fu Wizard: She comes from a clan who happens to be masters of unarmed combat.
- Let's Fight Like Gentlemen: She wants to compete honorably with Rin to finally determine who is the best.
Kazumi Matsuda
Kazumi Matsuda
Voiced by: Masumi Asano (Japanese), Kira Vincent-Davis (English)

- Foil: To Nakamaru.
- Pervert Revenge Mode: In episode 8. In response to Nakamaru's Accidental Pervert incident.
Maiho Kurioka
Maiho Kurioka
Voiced by: Chiemi Chiba (Japanese), Cynthia Martinez (English)

- Anti-Magic: She apparently has the power to neutralize magical powers. Because of this, she often tags along with Kazuki in order to keep his magic in check, much to Yuna's irritation.
- Last Episode, New Character: Maiho shows up right before the anime series ends, declaring to be Kazuki's bride. Yuna is not pleased about that.
Takashi Yamaguchi
Mitsuhiro Uki
Raika Nario
Others
Maika Kazetsubaki
Maika Kazetsubaki
Voiced by: Atsuko Tanaka (Japanese), Emily Carter-Essex (English)

- Ojou: Just like Kuriko.
- Ojou Ringlets
Mitsuaki Nanba
Principal Mori
Shunji Kamishiro
Shunji Kamishiro
Voiced by: Yasunori Matsumoto (Japanese), John Gremillion (English)

- Ascend to a Higher Plane of Existence: After he dies at the end of episode 15, he ascends to the moon.
- Curtains Match the Window: Black hair and eyes.
- Long-Haired Pretty Boy
- Strict Teacher: His training method for Rin seems to be Training from Hell.
- Super Speed: He seemingly is ably to move faster than light.
Taki