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Hishikawa Rikka

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Hishikawa Rikka
菱川 六花 Hishikawa Rikka
SeasonDoki Doki! Pretty Cure
Eye ColorDark Blue (Rikka)
Blue (Diamond)
Hair ColorNavy (Rikka)
Blue Indigo (Diamond)
Home PlaceOogai Town
RelativesHishikawa Ryoko (mother),
Hishikawa Yuuzou (father)
First AppearanceDDPC01(Rikka)
DDPC03(Cure Diamond)
Alter EgoCure Diamond
Theme ColorBlue (main)
White (sub)
Japanese Voice ActorKotobuki Minako

Hishikawa Rikka (菱川 六花 Hishikawa Rikka?) is one of the main Cures in Doki Doki! Pretty Cure. She is one of Mana's childhood friends and the secretary of Oogai First Middle School's student council. Her Cure Ego is Cure Diamond (キュアダイヤモンド Kyua Daiyamondo?).


Rikka has navy eyes and darker colored hair worn loose with a small braid, one on each side of her head pulled back and held together at the center. Her bangs are kept short with two thin forelocks that reach her chest. Her casual outfit is a light blue pleat dress with blue accenting and white frills, worn over a white blouse that has a navy bow-tie. She wears plain brown shoes with dark blue socks. In summer she switches to a white tunic reminiscent of a light blue sailor top that has a sapphire ribbon at the chest to match the light blue diamond pattern tracing the bottom. It is worn with a pale blue pleat skirt, blue shoes, and white socks. She sometimes wears red glasses.

As Cure Diamond, Rikka's eyes become brighter while her hair grows in length and turns pale indigo. Her hair is worn in a thick, high ponytail with a curl on the end to match the four separate curls hanging from it, two of which are thicker than the others. Her bangs are brushed neatly and she gains two more forelocks. She wears blue diamond shaped earrings a small, ice-blue brim on her head, lined in dark blue to match the diamond in the center, lined with feathery white material. Her ice-blue dress appears shorter in front than the back with a pale blue feathery material around the bottom of the skirt and the shoulders. Around the torso is dark blue and white lining, along with a dark blue heart-shaped ornament attached to a white border and cloth, along with a light blue bow sewn to the right. Her skirt is shaped to reveal a layered skirt beneath it. With dark blue short-like pants underneath. Comes with white shoes with a loose, pale blue cuff and a thin yellow band around the ankle, where a small white flap is located. On each wrist is a yellow bracelet to match her choker.  On her right side, hangs her Lovely Commune.


Rikka is a quiet, honest, blunt, not afraid to speak her mind and a very intelligent girl. She is a second year student at Oogai First Middle School, and the student council's secretary. She loves to study, and is a genius at it, being one of the Top 10 scorers in the national trial exams. She is great at observing people and situations. As noted by Mana in episode 9, Rikka is at the top of the class and constantly placed as the first place in her school, however her scores started to drop as she was in second place because of starting to play competitive karuta, as it was seen in episode 14.

Rikka is childhood friends with Mana, since they live near each other. Ever since they were children, Rikka has been taking on the responsibility of looking after the troublemaker Mana, sometimes being taken advantage of. Despite that, she also was always protected by Mana which makes Rikka trust her. She strives to lead a quiet school life, but is often dragged into various things by Mana.


Rikka is Mana's best friend and they have known each other since elementary school. She always tries to stop Mana from overdoing things but cannot seem to do so. Her mother works late at a local hospital and her father travels the world as an Archaeologist. Rikka finds out about Pretty Cure when Mana decides to tell her because it is hard for her to keep a secret from her best friend. She later runs into the mysterious merchant who gives her a Cure Lovead that she later decides to use to help her friend as Cure Diamond.


Aida Mana: Mana is one of Rikka's very close childhood friends and current schoolmate.

Yotsuba Alice: Alice is another one of Rikka's childhood friends, as they met in elementary school.

Kenzaki Makoto: Makoto is one of her Pretty Cure teammates.

Raquel: Raquel is Rikka's transformation partner who helps her transform into Cure Diamond.

Hishikawa Ryoko: Rikka's mother, she appears as a doctor who is always late.

Hishikawa Yuuzou: Rikka's father, who appears as a professional photographer, and often travels a lot.

Aguri Madoka: She and other Cures met her during the battle with Regina. 

Ira: She took him in and looked after him in episode 26 and went against Cure Ace to protect him, Ira has been teased by Marmo of having a crush on Cure Diamond, and he has also called her an 'Angel' in episode 26, whether he does have feelings for Rikka or not is unknown. In the second to final episode he is shown protecting her from a Jikochuu despite him saying after "The one who will defeat the Pretty Cure will be me." In the episode after he is fighting her again before the others can enter Selfish King, he was almost trying to stop her because he said that she could disappear but she told him she had to. At the end of the final episode he is shown looking at her and then smiling before the Selfish Trio leave again. It is believed by many fans that they have a romantic relationship, but it was confirmed by the producers that Rikka probably has no romantic interest in Ira. [General References 1]

Cure Diamond

"The light of Wisdom! Cure Diamond!!"
Eichi no Hikari! Kyua Daiyamondo!!

Cure Diamond (キュアダイヤモンド Kyua Daiyamondo?) is Rikka's Pretty Cure alter ego. She represents the light of wisdom.

ドキドキ!プリキュア キュアダイヤモンド変身シーン DokiDoki! Precure 02-000:56

ドキドキ!プリキュア キュアダイヤモンド変身シーン DokiDoki! Precure 02-0

Cure Diamond's transformation and introduction.


Raquel cries out his name before Rikka first places her transformation Cure Lovead onto Raquel's silver heart medallion object and shouts "Pretty Cure Love Link!" She then spells "L-O-V-E" on her Lovely Commune and the transformation begins. She is seen floating around with her body, except for her head, glowing with blue light.  First, her hair glows blue and grows into a long ponytail. Her hair then turns to a lighter blue and her hair accessories and diamond shaped earrings start to appear. Her dress then appears and her Lovely Commune attaches itself to it. Next is her heart brooch, bracelets and boots. Finally her dress ribbon appears on her pelvis and Cure Diamond poses saying her introduction speech.


Twinkle Diamond - is Cure Diamond's main attack, with the incantation "Sparkle! Twinkle Diamond!" (煌めきなさい!トゥインクルダイヤモンド! "Kiramekinasai! Tuinkuru Daiyamondo!"?). Cure Diamond activates her attack with the Lovely Commune. It then blinks twice and she points her finger towards the foe, releasing a flurry of blue diamond-shaped energy beams. With this attack, she can also freeze enemies.

Diamond Shower - is Cure Diamond secondary individual attack that appear in episode 11, firstly, she summon the Love Heart Arrow and set the Diamond Arrow Lovead within, then it shines, she take the arrow and she tap her arrow a couple of times releasing a big wave a diamonds.

Diamond Swirkle - is Cure Diamond's third individual attack performed with Magical Lovely Pad.

Diamond Blizzard - is Cure Diamond's fourth individual attack.  It looks like an upgraded version of Diamond Shower and Raquel says the incantation with her. After she uses this attack, she is encased in a diamond-shaped block of ice.


Cure Diamond Power Up

Cure Diamond Power Up

Like her Cure partners she can Power Up by herself when she takes it seriously in the battle, when this happens a blue light appear around her body.


Hishikawa (菱川?): Hishi (菱) means "a diamond shape", while kawa (川) means "river".

Rikka (六花?): The kanji Rikka (六花) means "snow". Individually, Ri (六) means "six" while ka (花) means "flower".


Rikka's voice actor, Kotobuki Minako, has participated in several image songs for the character she voices. Many of them include duets with Nabatame Hitomi, who voices Aida Mana, Fuchigami Mai, who voices Yotsuba Alice, Miyamoto Kanako, who voices Kenzaki Makoto, and Kugimiya Rie, who voices Madoka Aguri.


  • Summer's Meteor Shower (Along with Nabatame Hitomi)
  • Treasure (Along with Nabatame Hitomi and Fuchigami Mai)
  • Beyond The Sky (Along with Nabatame Hitomi, Fuchigami Mai, Miyamoto Kanako, Kugimiya Rie, Yoshida Hitomi and Kurosawa Tomoyo)


  • Rikka is the 12th Pretty Cure to be excellent in academics.
  • Rikka is the third Pretty Cure to have "kawa" in her last name. However, she is the only of the three who does not have a color in her family name.
  • Cure Diamond is the first Pretty Cure to wear bracelets instead of arm warmers.
  • Cure Diamond is the fifth Pretty Cure to have a long dress instead of a typical mini skirt.
  • Cure Diamond is the second Cure who uses as ice as her power (Some of her attacks are related to ice). The first one being Cure Beauty from Smile Pretty Cure!.
  • Rikka is the fourth Pretty Cure to have glasses. 
  • Cure Diamond is the second Pretty Cure to have a diamond as her symbol. The first is Cure Pine.
  • Rikka has some similarities with Kurumi Erika:
    • Both of their theme color is blue.
    • Both of them became Pretty Cure on the third episode.
    • Both of their fathers are photographers.
    • Both of them use water related powers when they are in Cure form. (Erika uses ocean powers, Rikka uses ice powers.)
  • The two curled side braids in Cure Diamond's hair might represent dog ears, given that her mascot partner resembles a puppy.
  • In episode 42, her zodiac is revealed to be Virgo.
    • Rikka's birthday date, which is September 17th, was revealed by Yamaguchi Ryota himself via Twitter.
  • Hishikawa Rikka/Cure Diamond is ranked as the 1st top anime character for December 2013.[1]
  • Her relationships with Ira are similar to Yukishiro Honoka and Kiriya.
  • Rikka appeared as Cure Diamond to give the 10th anniversary congratulatory message at the beginning of episode 25 of Happiness Charge Pretty Cure!.
    • Oddly, her bangs look similar to that of her civilian form instead of her Cure form.
  • Whenever Mana goes out of her way to help someone, she constantly calls Mana "The Happy Prince", after the fable written by Oscar Wilde. She likewise has a tendency to compare herself to the swallow from the same fable.
  • Rikka is similar to Aoki Reika from Smile Pretty Cure!:
    • Both have blue as their theme color.
    • Both have dark blue hair in civilian form and light blue hair when transformed.
    • Both have an R in their first names: Reika and Rikka.
    • Both are in the student council.


  1. "On romantic feelings: I don't feel that Rikka has romantic feelings toward Ira, though there were plans to develop it. But that would be overdoing it for Precure."


Main page: Hishikawa Rikka/Image Gallery


VTEDoki Doki! Pretty Cure characters
Cures Aida Mana/Cure HeartHishikawa Rikka/Cure DiamondYotsuba Alice/Cure RosettaKenzaki Makoto/Cure SwordMadoka Aguri/Cure AceCure EmpressCure MagicianCure Priestess
Mascots SharuruRaquelLanceDabyiAiMelan
Villains Selfish King/Trump KingReginaIraMarmoBelLevaGulaLustGomaJikochuu
Others Princess Marie AngeMichikoSebastianOkada JoeAida AyumiAida KentaroBando SokichiHishikawa RyokoHishikawa YuuzouYotsuba IchiroYotsuba SeijiYotsuba ShoukoYotsuba HiromichiMadoka MariNikaidou TakuyaMomota TsubasaYashima ChihiroJuujou HiroshiSaotome JunItsutsuboshi ReinaOotori TamakiKaruta QueenMorimoto EruMr. Kido
Movie only MarshMannequin CarmineSilver ClockPurple BuggyBando Isuzu/BebelMaro
VTEPretty Cure
Futari wa
(Max Heart)
Cure BlackCure White • (Shiny Luminous)
Splash Star Cure Bloom / Cure BrightCure Egret / Cure Windy
Yes! 5
Cure DreamCure RougeCure LemonadeCure MintCure AquaDark Pretty Cure 5 • (Milky Rose)
Fresh! Cure PeachCure BerryCure PineCure Passion
Heartcatch! Cure BlossomCure MarineCure SunshineCure MoonlightCure FlowerDark CureMirage Pretty CuresCure Ange
Suite♪ Cure MelodyCure RhythmCure BeatCure Muse
Smile! Cure HappyCure SunnyCure PeaceCure MarchCure BeautyBad End Pretty Cure
Doki Doki! Cure HeartCure DiamondCure RosettaCure SwordCure AceCure EmpressCure MagicianCure Priestess
Happiness Charge! Cure LovelyCure PrincessCure HoneyCure FortuneCure TenderCure MirageInternational Pretty Cure Teams
Go! Princess Cure FloraCure MermaidCure TwinkleCure ScarletPast Princess Pretty Cure
Mahou Tsukai! Cure MiracleCure MagicalCure FeliceCure Mofurun
KiraKira☆A La Mode Cure WhipCure CustardCure GelatoCure MacaronCure Chocolat
All Stars Cure Echo

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