Heiji Hattori and Kazuha Toyama

Heiji and Kazuha

Heiji Hattori and Kazuha Toyama serve as the beta couple for Detective Conan and a foil for Shinichi Kudo and Ran Mouri's relationship.

Relationship analysis

Heiji and Kazuha grew up together and are easily each other's best friend. Neither of them have been shown to have other close friendships, though Heiji does have a rivalry with fellow kendo practitioner Okita. They often spend time together, and Kazuha typically comes along when Heiji visits the Mouris or vice versa, getting caught up with Heiji in the criminal investigation. Kazuha and Heiji both wear good-luck charms that Kazuha made with pieces of the handcuff chain that stuck them together temporarily as children. Kazuha and Heiji have both shown jealousy when the other appears interested in someone else, but they are not officially in a romantic relationship. Kazuha has demonstrated awareness of her affection for Heiji, but has been either too shy or otherwise interrupted any time she tries to tell him. Heiji, in contrast, is either emotionally oblivious or purposefully ignoring his feelings for Kazuha for most of the series. Heiji has yet to attempt any sort of confession to Kazuha, but he is very protective of her.

Heiji and Kazuha moments

Episode 118: The Naniwa Serial Murder Case

Kazuha accuses Ran of being the Kudo that Heiji is in love with.

• Kazuha watches Ran so intently that Ran can sense it, then appears and threatens Ran that if she has any designs on Heiji, she'll have to compete with Kazuha and their childhood bond. After Ran watches Heiji and Kazuha interact, and Heiji explain that the "Kudo" he has been talking about is actually a guy, Ran asks if they are a couple. They both deny it, citing their fathers' connection, but Kazuha admits with a blush that she had been following Heiji and the Mouris for some time to make sure Heiji didn't "get carried away by some Tokyo girl."

• When Heiji leaves to investigate the murder, Kazuha calls after him to be sure he has his lucky charm for protection. Heiji confirms that he does and tells her to not worry.

• Kazuha reveals with a blush that she hid a piece of the handcuffs in the charm she gave to Heiji, though he may be unaware of it.

• When Heiji is shot in the stomach and appears to be dying, Kazuha cries and embraces him (though this makes Heiji angry, because he merely wanted to sleep from being tired, not fatal blood loss).

Episode 141-142: The Night Before the Wedding Locked Room Case

• Kazuha accompanies Heiji to Tokyo to attend a wedding on behalf of his mother, and blushes when she claims coming along was only a favor to Heiji's mother.

• Kazuha treats Ran coldly, to Ran's confusion, until Kazuha reveals she is annoyed that Ran and Heiji are wearing matching shirts like they did before in Osaka, as if they had planned it as a couple.

• At a temple for prayers, Heiji says Kazuha should ask for nice legs, causing Kazuha to blush.

• After the case concludes, Ran pushes Kazuha to wear the same sort of shirt as Heiji; when Heiji notices, Kazuha blushes and says she'll change. Heiji says he doesn't mind... because it makes them look like siblings. Kazuha looks nonplussed by the unromantic comparison.

Episode 174: The Symphony Serial Murder Case

• Heiji comments that he and Kazuha aren't "like Ran and Shinichi", but stops speaking on after Conan reminds him why.

• Heiji looks happily at the charm Kazuha gave him, before he left, wondering about if it worked or not. As he thought this, he also thought about Kazuha's angry face. Then, Ran and Conan, began to tease him about thanking Kazuha for the charm. Heiji greatly denied thinking about the charm, saying he should throw it in the sea, but decides to keep it, thinking he might be punished if he did.

Episode 222-224: And Then There Were No Mermaids

• Kazuha says she has thought about staying forever young and beautiful. When Ran asks if she wants to because of liking Heiji, Kazuha blushes and tells Ran to not talk so loud.

• After the murder occurs, Kazuha happily tells Ran that the criminal will be found soon because Heiji flipped his cap from back to front, signifying his becoming serious. She adds with a blush that Ran shouldn't praise him, because Heiji's weakness is that he's too confident, causing Ran to hug Kazuha and call her cute.

• After the second murder, Heiji tells Kazuha not to wander off, causing her to blush. She takes him at his word and follows as he investigates, as well as offering to protect him with her blessed arrow. Heiji doesn't think much of it, but Kazuha privately affirms that she means it seriously.

• In pursuit of a memorial stone, Heiji runs nearly off a cliff, saved only by Kazuha swinging him around to trade places. As a result, she falls, and Heiji dives after her, catching onto a tree in the cliff face with one hand and her with the other. Kazuha believes the branch Heiji is holding will break if he tries to pull her up, and stabs the hand holding her wrist with the mermaid arrow to transfer her "long life" to Heiji. To her surprise, Heiji still doesn't let go and gets them both to safety despite the injury.

“	Even if I die, I won't let you go.	„
— Heiji refusing to drop Kazuha.

• After Kazuha expresses her relief that Heiji's hand has apparently already healed overnight, Heiji thinks to himself that he won't let her be hurt (even, apparently, with only feelings of guilt). He showed her and Ran the wrong hand, hiding the bandaged one in his pocket.

“	Fool. You're too naive. I will never... never... let you be hurt.	„
— Heiji's secret promise to Kazuha.

Episode 238-239: The 3 "K"s of Osaka Case

• Kazuha overhears Heiji talking secretively on the phone with Shinichi, and assumes that he is "having an affair" with a mysterious woman. She attends the party with Heiji, suspicious that the "woman" asked Heiji to come.

• When the murder occurs, Heiji tells Kazuha to keep the suspects staying put, trusting that she'll do so.

• Kazuha tells Ran not to worry about Conan helping Heiji investigate, and proudly adds that since Heiji's on the case, no one will get hurt.

Episode 263: The Naniwa Swordsman and Toyotomi's Castle

• At the kendo tournament, Kazuha blushes as she tells Shizuka that Heiji has gotten very strong as a kendo fighter. She also helps Heiji put his gear on.

• Exhausted from chasing Heiji at the tournament, Kazuha falls asleep onto Heiji's shoulder at dinner.

• While in the car, Kazuha overhears her father telling Heiji's father that since Kazuha is reaching marriageable age, he'd rather she marry Heiji than some "irresponsible punk". Kazuha blushes at the thought, and is disappointed when her father tells Heizo it was a joke.

• When Kazuha loses her wallet, she refuses to give up looking for it because it had her good-luck charm (with the handcuff chain) and other charms to ward off a murder case inside.

• Kazuha called her father to help investigate because he knows aditional information about the case; she initially tries to get Heiji to leave with her, but twhn leaves with just Ran because she wants to see his triumphant expression when he's solved the case. When he gets that expression, she blushes happily and assures the others that Heiji knows who the criminal is already.

Episode 325-327: The Red Horse within the Flames

• After the last arc, Heiji and Kazuha stay at the Mouri Residence.

• Kazuha told Ran that Heiji and Conan get along very well, making Ran comment that Kazuha might be jealous of the Conan's relationship with Heiji, but Kazuha tries to explain that's not what she meant.

• Heiji momentarily looks back at the two girls, probably at Kazuha, worrying that the arsonist might strike near the Mouri Residence, until Conan, dryly, explains it wouldn't.

Episode 381-382: Which One's Deduction Show

• Heiji and Kazuha go to visit Ran,Conan, and Kogoro in Tokyo.

• Heiji and Kazuha have a "love fight", over whether to go to Koshien or Takarazuka, and decide to do a deduction competition, that Kogoro suggested on an unsolved case.

• Kazuha and Heiji are next to each other, during the investigation.

• In a brief moment,Kazuha smiles at Heiji, as he deduces the victim's dying message, before she realized about their "competition".

• After finding out some crucial tricks the culprit used on the case, he looks over at Kazuha and apologizes that he was going to win. However, he notices her crying over not figuring out the case. As Heiji watches his expression becomes more sad and guilty.

• Leaving off from the last scene,Heiji recalls Shinichi's speech on "inferior and superior" deductions, and chooses to let Kazuha win, by secretly giving her hints.

• Even though Heiji didn't mean to win the showdown, he only wanted to give enough hints so Kazuha would scope out the real culprit. He tries to tell Kazuha they can go to Takarazuka, but she decides not to, much to his confusion.

• Kazuha congratulates Heiji on winning, and agrees to go to Koshien, Ran tries to convince her that she did do half the work, but Kazuha decides to not bother about it. She secretly reveals to herself, that she didn't care if she went to Koushien or Takaeazuka, all she wanted to see was Heiji's expression when he solves a case.

Episode 383: Miracle at Koshien Ball Park! The Defiants Face the Dark Demon

• Heiji and Kazuha, appear with Conan and Ran, during the opening of the special episode. Both were seen standing next to each other, during the ending.

• After Conan's introduction, Kazuha was on the same side as Heiji.

• Kazuha starts to wonder what's taking Heiji so long.

• Heiji grabs the phone picked up,and begins to yell,greatly shocking and confusing Kazuha.

Episode 406-408: Conan and Heiji's Deduction Magic

• Heiji accompanies Kazuha to a magic show in Osaka.

• Kazuha became noticebly irritated at Heiji, when he stated the women in the magic show were "beauties".

• Conan and Heiji dash worriedly to where they heard Ran and Kazuha scream.

• Heiji teases Kazuha about wanting to see a magic show.

• Kazuha tells Heiji that Hoshikawa couldn't be the criminal, because she hugged him, causing Heiji to become frustrated, and chastise her for bieng "intimate" with an adult man briefly.

• After Kazuha comments on how "brilliant and cool" Shinichi Kudo is, Heiji quickly becomes jealous, walks over to her, with an aggravted look and takes Ran's cellphone, with an excuse, he roughly grabs Conan, and sarcastically asks what the "great Kudo", has come up with during the investigation.

• Heiji confides in Conan, that whenever Kazuha speaks with another guy, he starts getting agitated and is not able to concentrate. Conan realizes that Heiji has fallen in love with Kazuha, without even knowing it himself, but instead of telling him the real reason Heiji had these feelings, Conan saids the reason Heiji is feeling this way is because he's a "brat".

• Heiji is shocked at the fact Kazuha was speaking to another man, and the becomes noticeably jealous, and before further investigating the case, he tells her to stay with Ran, giving the reason that she made him angry. Kazuha starts wonders why he's behaving so strangely, and Ran tries tell her, Heiji was jealous, but Kazuha misunderstood.

• Kazuha grabs Heiji's arm, so he can reveal how Hoshikawa committed the crime, but it leaves the Osaka boy detective blushing.

• At the end of the case, Heiji finally figures out why he was acting so weird, and was going to tell Kazuha he didn't like her talking to other guys because she was his follower, such as, how her father is his father's subordinate. This, of course got Kazuha very upset. Then, the two began another one of their, "love fights".

Episode 652-655: The Design of Poison and Mirage

• Kazuha confesses her feelings to Heiji, but Heiji didin't hear that because he ran away when Kazuha was about to confess.

Movies and OVAs

Heiji and Kazuha's reaction when a reporter inquired when they will be married

In The 7th movie Crossroad in the Ancient Capital Heiji realizes that Kazuha was his first love and remains to be his true love from that day. Though they may bicker and make fun of each other, Heiji and Kazuha both care for each other very deeply and cares for the others safety and would even risk their own safety for the cost of the others.

In the 9th OVA The Stranger from Ten Years Later Heiji and Kazuha were shown, in the future, of ten years later. When Heiji was shown on TV, Kazuha shows up, and the two "fight". When the reporter asked them when their marriage is, they become dumbfounded.

Trivia

• Fans of the Heiji-Kazuha pairing sometimes refer to them as "KazuHei."
• Kazuha's father once told Heiji's father that he would prefer for Kazuha to marry Heiji than any other boy.
• In most openings, the couple have been shown together.
• Their habit of calling each other, "Ahou", might be their own little "pet name", for each other.

See also

• Heiji Hattori
• Kazuha Toyama
• Shinichi Kudo and Ran Mouri
• Kaito Kuroba and Aoko Nakamori