History Characters / GuiltyCrownTennouzuHighSchool

[[folder:Arisa Kuhouin]]

[[folder:Kanon Kusama]]

To return to the Character page for ''Anime/GuiltyCrown'', go '''[[Characters/GuiltyCrown here]]'''.

! Leadership

!! Arisa Kuhouin

!!Shu Ouma

!! Kanon Kusama

!! Inori Yuzuriha

!! Hare Menjou

!! Souda Tamadate

!! Yahiro Samukawa

!! Hirohide Nanba

!! Takaomi Sudou

!! Ritsu Takarada

!! Miyabi Herikawa

* AssholeVictim: Along with Nanba and Ritsu, it was technically his willingness to quickly shift his allegiance from Shu to [[spoiler:Gai]] that ultimately leads to his death. Even so, the guy was a pervert, a jerkass, and a ''fucking prick'' even before his death.

* AssholeVictim: Along with Nanba and Ritsu, was technically his willingness to quickly shift his allegiance from Shu to [[spoiler:Gai]] that ultimately leads to his death. Even so, the guy was a pervert and jerkass even before his death.

%%* BrownEyes

* NiceJobBreakingItHero: His Void ranking system idea, though logical due to their shortage of supplies and need to properly defend themselves, [[spoiler:ends up provoking those ranked useless to prove themselves, the Anti Bodies attack them when they attempt this, and Hare is killed in the crossfire.]]

* {{Irony}}: His Void neutralizes firearms, but he himself carries a gun to oppress others.

* AssholeVictim: It was technically his willingness to quickly shift his allegiance from Shu to [[spoiler:Gai]] that ultimately lead to his death. Even so, the guy was a manipulative bastard and a pervert before his death.

* AssholeVictim: It was technically his willingness to quickly shift his allegiance from Shu to [[spoiler:Gai]] that ultimately lead to his death. Even so, the guy was a pervert and jerkass even before his death.

* Asshole Victim: It was technically her willingness to quickly shift her allegiance from Shu to [[spoiler:Gai]] that ultimately lead to her death.

* HeterosexualLifePartners: With Miyabi.
%%* ProperTightsWithASkirt

* Asshole Victim: It was technically his willingness to quickly shift his allegiance from Shu to [[spoiler:Gai]] that ultimately lead to his death. Even so, the guy was a manipulative bastard and a pervert before his death.

* Asshole Victim: It was technically his willingness to quickly shift his allegiance from Shu to [[spoiler:Gai]] that ultimately lead to his death. Even so, the guy was a pervert and jerkass even before his death.

!! Leadership

!! Students

[[folder:Shu Ouma]]
!!Shu Ouma

[[folder:Inori Yuzuriha]]
!! Inori Yuzuriha
--> See Characters/GuiltyCrownMainCharacters
[[/folder]]

[[folder:Shu Ouma]]
!!Shu Ouma
--> See Characters/GuiltyCrownMainCharacters
[[/folder]]

[[folder:Inori Yuzuriha]]
!! Inori Yuzuriha
--> See Characters/GuiltyCrownMainCharacters
[[/folder]]

[[folder:Hare Menjou]]
[[quoteright:225:http://static.tvtropes.org/pmwiki/pub/images/127007_2696.jpg]]
->'''Voiced by:''' Creator/YuShimamura (Japanese), Creator/TiaBallard (English)

Shu's classmate. She has feelings for Shu.

Her Void is a long white bandage that can heal anything.

* AnguishedDeclarationOfLove: To Shu in Episode 10. She does it again in Episode 15 before they are interrupted.
* BettyAndVeronica: The Betty to Inori's Veronica.
* BroodingBoyGentleGirl: Has this dynamic with Shu.
* CharacterDeath: [[spoiler:She is killed in Episode 15.]]
* CurtainsMatchTheWindow: She has matching brown hair and brown eyes.
* DiedInYourArmsTonight: [[spoiler:Subverted that by the time Shu gets her in his arms, she's already dead, but it is when she's in his arms that her crystallization state finalizes and she disappears.]]
* DoggedNiceGirl: Towards Shu.
%%* FriendlyTarget
* FutileHandReach: [[spoiler:As she dies, Hare reaches to hold Shu's hand but expires before she can do so.]]
%%* GirlishPigtails
%%* GirlNextDoor
%%* GoOutWithASmile
* GreenEyedMonster: She is jealous of Inori, but far too gentle a person to call her out.
%%* HairDecorations
* HealingHands: Her Void.
* TheHeart: After the lockdown goes into effect, she has this effect on the main group of students.
* HeartIsAnAwesomePower: Her Void can heal ''anything''.
* HeroicSacrifice: [[spoiler:Heals Shu rather than herself and bleeds out. Her Void getting shot then causes the Apocalypse Virus to rapidly manifest itself and her corpse shatters shortly thereafter.]]
* HopelessSuitor: Subverted. Shu is aware of her feelings and even at one point tries to kiss her, but due to his HeroicBSOD (and is thus unable to accept her feelings thoughtfully), Shu is rejected by her.
* LongingLook: Tends to eye up Shu a lot.
* TheLostLenore: [[spoiler:To Shu.]]
%%* TheMedic
* MissFixit: She can heal ''anything''. Like a robot. Or a bridge.
%%* NiceGirl
* ReplacementLoveInterest: Shu uses her in this fashion during his HeroicBSOD when everyone in Funeral Parlor, including Inori, leaves him. Initially, she tries to support Shu in any way she can, but she eventually [[WhatTheHellHero calls him out]] on it. In Episode 11, Shu seemingly reciprocates, or at least treats her with a great deal of kindness for it.
%%* TooGoodForThisSinfulEarth
* UndyingLoyalty: While not as vocal about it as Inori, Hare is very loyal to Shu. [[spoiler:She's the only one of his old friends to wholeheartedly support him as student council president, right up until her death.]] Hare [[LampShade lampshades]] this in her speech about the "kind king," which represented Shu--while everybody else became dissatisfied with the king and eventually rebelled against him, she supported him because she saw the good in him.
* UnknownRival: She considers Inori her rival for Shu's affections. [[EmotionlessGirl Inori]] vaguely notices her existence.

[[folder:Souta Tamadate]]
[[quoteright:225:http://static.tvtropes.org/pmwiki/pub/images/142421_3658.jpg]]
->'''Voiced by:''' Creator/DaisukeSakaguchi (Japanese), Corey Cleary-Stoner (English)

Shu's classmate and a member of the motion picture research club. A big fan of Inori.

His Void is a strange camera that can open anything it photographs.

* AnguishedDeclarationOfLove: He nearly confesses to Inori in Episode 8 when Shu drops in to extract his Void.
* ArtEvolution: After crossing the DespairEventHorizon mentioned below, he visually appears much older, even though his character design is unchanged.
* BromanticFoil: To Shu.
* CurtainsMatchTheWindow: He has black hair and black eyes.
* DespairEventHorizon: Crossed it after [[spoiler:Hare's death and the Void Ranking System.]] Every appearance since has had him as an [[DeusAngstMachina empty shuddering shell of the person he used to be]].
* TheDogBitesBack: [[spoiler:The moment Hare died and Shu turned FallenHero, life has been hell for Souta. Come Episode 17...]]
* DoggedNiceGuy: Towards Inori.
* {{Fanboy}}: Of Egoist and Inori.
* TheFriendNobodyLikes: Souta is flawed, he can be obnoxious and reckless, but the gang seems to keep him around because he has good intentions.
%%* HopelessSuitor
* {{Hypocrite}}: Says he accepts responsibility for [[spoiler:Hare's death]], then gets upset when Shu actually blames him for it. Mostly because of OOCIsSeriousBusiness; in the past Shu would have made a justification to make Souta feel better.
* IWantMyBelovedToBeHappy: Towards Inori.
* {{Keet}}: Has shades of this.
* LeeroyJenkins: While Shu and the others try to plan how to get into a hospital to get vaccine, he and the other "F"-ranked students rush there first in order to prove that their Voids are useful. [[spoiler:It's deconstructed since doing so led to Hare's death.]]
%%* MasterOfUnlocking
* MundaneUtility: Shu can use his Void to great effectiveness, but Souta can only use it to open cans of food.
* MyGodWhatHaveIDone: He blames himself for [[spoiler:Hare's death]], as he was the one who [[spoiler:told her to heal the car that exploded when Daryl attacked them]] in the first place. [[spoiler:Shu agrees with him and proceeds to punch him repeatedly.]]
* MyGreatestFailure: [[spoiler:Causing Hare's death.]]
* NiceGuy: Unlike Yahiro, it's genuine. Even though his plans often end in disaster, the kid hasn't got a malicious bone in his body.
* NiceJobBreakingItHero:
** In Episode 13, his idea to cheer up the other students by hosting a fair, while admittedly a good one, is what pushes a group of disgruntled refugees to attack the school.
** In Episode 15, the "F"-ranked students and he attempt to retrieve vaccines at a hospital to prove their Voids are useful to Shu. Shu and Hare pursue them, and they all end up getting surrounded by Anti Bodies. [[spoiler:The end result is Hare getting killed.]]
* NotSoDifferent: With Shu. Both of them have problems understanding people, but while Shu became withdrawn and stoic, he became loud and overbearing.
* RedOniBlueOni: The Red Oni to Yahiro's Blue Oni.
* WrongGenreSavvy: His plans would work in some universes. This one just [[spoiler:ends up with Hare getting killed]].

[[folder:Yahiro Samukawa]]
[[quoteright:300:http://static.tvtropes.org/pmwiki/pub/images/yahirosamukawavwx2013_720.jpg]]
->''"I'm not going to apologize. This is an absurd, unfair world."''

->'''Voiced by:''' Creator/TakahiroMizushima (Japanese), David Trosko (English)

Shu's classmate and a member of the motion picture research club.

His Void is an odd pair of shears with the power to end life.

%%* AntiHero
%%* BeneathTheMask
%%* BewareTheNiceOnes
* BigBrotherInstinct: Subverted in that his Void reflects [[spoiler:his inward resentment, as he secretly views his brother as a burden.]]
%%* {{Bishounen}}
* BitchInSheepsClothing: Just when you think Shu and he have solved their issues and made up... [[spoiler:he sells Shu out to the GHQ.]]
%%* CurtainsMatchTheWindow
%%* FaceHeelRevolvingDoor
%%* HiddenDepths
* {{Jerkass}}: Not only is he a jerk to Shu, he also [[spoiler:sold him out to the GHQ]].
* KnightTemplarBigBrother: He's willing to [[spoiler:sell out Shu and sell the Norma Gene drug]] to support his virus-infected younger brother.
* TheManBehindTheMan: [[spoiler:He is the driving force behind Shu's plans. Shu calls him out on this later. Yahiro denies it (or rather, attempts to justify it), as he claims to genuinely value Shu and wants to save people. Shu doesn't believe him.]]
* NiceJobBreakingItHero: His Void ranking system idea, though logical due to their shortage of supplies and need to properly defend themselves, [[spoiler:ends up provoking those ranked useless to prove themselves, the Anti Bodies attack them when they attempt this, and Hare is killed in the crossfire.]]
* OneHitKill: Those pliers of his basically give their wielder the [[VisualNovel/{{Tsukihime}} Mystic Eyes of Death Perception]], allowing them to kill ''anything'' with a single blow if they aim it properly.
* PlagueMaster: His Void blows that ''don't'' score a OneHitKill, meanwhile, will infect anything they hit with the Apocalypse Virus, so you're pretty much out of luck either way. [[spoiler:Yes, this includes machines like Endlaves.]]
* RedOniBlueOni: Blue Oni to Souta's Red Oni.
* ScrewThisImOuttaHere: [[spoiler:Very pointedly failed to lift a finger during Arisa's coup, instead concentrating on helping with the evacuation effort.]]
* ShipTease: Episode 13 implies that he reciprocates Kanon's feelings. Either that, or he was just being nice. Very, very nice.
* TheSpock: Brings a harsh dose of reality to the school after the lockdown goes into effect. Even since then, his emotions seem to be completely under his control; the one time he has displayed overt emotion since was a calculated gesture [[spoiler:to get Shu elected StudentCouncilPresident]].
%%* StepfordSmiler
* TheStoolPigeon: [[spoiler:Of the Betrayer Barry variety. He ends up selling out Shu to secure treatment for his sick little brother. Especially jarring since Shu was under the impression that they had successfully talked over their differences.]]
* WellIntentionedExtremist: [[spoiler:His days selling Norma Gene to pay for his brother's treatments, and likewise, the Void Ranking system. He knows there aren't enough resources to save everyone, thus the Void ranking system.]]

[[folder:Arisa Kuhouin]]
[[quoteright:225:http://static.tvtropes.org/pmwiki/pub/images/127019_8649.jpg]]
->'''Voiced by:''' Creator/AyaEndo (Japanese), Creator/CaitlinGlass (English)

The student council president.

Her Void is a [[DeflectorShields sphere-shaped shield]] that can separate and eliminate attacks.

* ArrangedMarriage: In Episode 16, her grandfather planned to give her to the leader of the Ming Hua Group as a wife in exchange for his help determining the future of Japan, and Argo is sent to retrieve her. The plan falls apart, though.
* AscendedExtra: Appeared in all of a single episode on her own before joining with the rest of Shu's friends in his rush to save Inori.
* BewareTheNiceOnes: [[spoiler:After Inori's attack on her (and her own belief that it was out punishment for trying to go against Shu), she decides to create a [[TheMutiny coup d'etat]] with the student body against Shu and ''succeeds''.]]
* BitchInSheepsClothing: Her niceness hides a ruthless personality behind it.
* BreakTheCutie: Getting [[spoiler:attacked by Inori]] really did a number on her.
* BrokenBird: Is completely delusional after the events of Episode 16.
%%* BrownEyes
* ClingyJealousGirl: [[spoiler:She ''does not'' like Inori because of her closeness to Gai.]]
* DeflectorShields: Her Void.
* DisneyDeath: [[spoiler:It appeared as though she was killed off by Inori in Episode 16, but Episode 17 reveals that she's still alive and merely had her hand injured. She is shot in Episode 22 and is seemingly dead until she is shown with Da'at members, still alive but wounded.]]
* EnemyMine: She tentatively teams up with Shu in Episode 19 to look for Haruka.
* FaceHeelTurn: [[spoiler:She turns the school against Shu before joining Gai.]]
* HairOfGoldHeartOfGold: Beautiful, a prestigious {{Ojou}} and very rightful. Eventually subverted after [[spoiler:her FaceHeelTurn]].
* ImaginaryLoveTriangle: She has deluded herself into thinking that [[spoiler:she's competing with Inori for Gai.]]
%%* ManipulativeBitch
* MurderTheHypotenuse: Although never outright stated, it's very clear that she [[spoiler:wishes to kill Inori]] after finding out that [[spoiler:Gai]] seems to need her more. Were it not for being surrounded by many people who would most definitely have objected, [[spoiler:and the fact that Inori is BewareTheQuietOnes brought UpToEleven]], she likely would have not succeeded.
%%* {{Ojou}}
* SexForServices: [[spoiler:At her lowest, a desperate Arisa sleeps with Nanba to ensure the success of her plot against Shu's tyranny.]]
* ShipTease: She seems to develop a small crush on Gai after meeting him, but nothing ever comes of it. [[spoiler:When Gai returns, she views him as a savior and is jealous of Inori.]]
* SpoiledSweet: She comes from a wealthy and influential family, but she is a just person and defends Shu when he returns to school from rumors of his arrest by the GHQ.
* StepfordSmiler: Shows signs of this. Naturally, her Void ends up being DeflectorShields.
* StoneWall: Easily holds off several men armed with full auto machine guns for several minutes.
* StudentCouncilPresident: She serves as Tennouzu High School's leader of the student government. [[spoiler:At least, initially. Due to her inability to appease the student body after the Lockdown, they decide to elect a new student council president--Shu.]]
* SubordinateExcuse: [[spoiler:She only joins the Da'at to be close to Gai.]]
* {{Yandere}}: [[spoiler:Post-FaceHeelTurn, she becomes this to Gai. She desires to be useful to Gai, is jealous of Inori due to her relationship with Gai, and wants to know ''everything'' about him.]]
* YouMonster: [[spoiler:Inori is called by Arisa, along with revived!Gai in Episode 18.]]
%%* ZettaiRyouiki

[[folder:Kanon Kusama]]
[[quoteright:225:http://static.tvtropes.org/pmwiki/pub/images/127017_1466.jpg]]
->'''Voiced by:''' Creator/MinakoKotobuki (Japanese), Apphia Yu (English)

The chairman of Class 2-A.

Her Void is a scouter that allows the user to see long distances.

* AlliterativeName: Her first and last name start with the letter K.
* BrokenBird: [[spoiler:Hare's death]] and the changes in the school reduce her to a sobbing wreck.
%%* ClassRepresentative
* CurtainsMatchTheWindow
* DoggedNiceGirl: To Yahiro.
%%* {{Meganekko}}
* PervertRevengeMode: Let's just say she wasn't pleased when Shu [[AccidentalPervert accidentally]] [[ThanksForTheMammary grabbed her breast]].
* SatelliteCharacter: To Yahiro and to a lesser extent, Hare.
%%* SciFiBobHaircut
* SkinshipGrope: She playfully grabs Inori's breasts in Episode 8.
%%* TsurimeEyes

%%* BitchInSheepsClothing

* FaceHeelTurn: [[spoiler:Turns the school against Shu before joining Gai.]]

* StudentCouncilPresident: [[spoiler:Formerly. Due to her inability to appease the student body after the Lockdown, they decide to elect a new student council president--Shu.]]

%%* TheBully

%%* EvilRedhead

%%* TheStoic

%* CharacterDeath: [[spoiler:He is killed when Gai uses his void to destroy a UN aircraft]].

%%* CharacterDeath

%%* CharacterDeath

%%* {{Jerkass}}
%%* JerkWithAHeartOfGold

%* CharacterDeath

%%* FourEyesZeroSoul

** His first on-screen act was the {{attempted rape}} of Ayase.

%%* CharacterDeath

%%* {{Jerkass}}
%%* KilledOffForReal

* CurtainsMatchTheWindow

* FriendlyTarget

* GirlishPigtails
* GirlNextDoor
* GoOutWithASmile

* TheGwenStacy
* HairDecorations

* KilledOffForReal: [[spoiler:She is killed in Episode 15.]]

* TheMedic

* NiceGirl

* TooGoodForThisSinfulEarth

* CurtainsMatchTheWindow

* HopelessSuitor

* MasterOfUnlocking

* AntiHero
* BeneathTheMask
* BewareTheNiceOnes

* {{Bishounen}}

* CurtainsMatchTheWindow
* FaceHeelRevolvingDoor
* HiddenDepths
* {{Jerkass}}
* JerkWithAHeartOfGold

* ManBehindTheMan: [[spoiler:He is the driving force behind Shu's plans. Shu calls him out on this later. Yahiro denies it (or rather, attempts to justify it), as he claims to genuinely value Shu and wants to save people. Shu doesn't believe him.]]

* StepfordSmiler

* BitchInSheepsClothing

* BrownEyes

* ManipulativeBitch

* {{Ojou}}

* ZettaiRyouiki

* AlliterativeName

* ClassRepresentative

* {{Meganekko}}

* SciFiBobHaircut

* TsurimeEyes

* TheBully

* FourEyesZeroSoul

* KilledOffForReal

* TheSociopath

->'''Voiced by:''' Yomoyuki Higuchi (Japanese), Creator/ChristopherBevins (English)

* TheBully
* EvilRedhead
* {{Jerkass}}
* KilledOffForReal

* CurtainsMatchTheWindow
* GenkiGirl

* KilledOffForReal
* ProperTightsWithASkirt

* KilledOffForReal
* {{Meganekko}}

* TheStoic
* ZettaiRyouiki

* BlondesAreEvil

Shu's classmate. She has feelings for Shu. [[spoiler:She is killed in Episode 15.]]

* KilledOffForReal

* [[spoiler:DiedInYourArmsTonight: Subverted that by the time Shu gets her in his arms, she's already dead, but it is when she's in his arms that her crystallization state finalizes and she disappears.]]

* [[spoiler:FriendlyTarget]]
* [[spoiler: FutileHandReach: As she dies, Hare reaches to hold Shu's hand but expires before she can do so.]]

* [[spoiler:GoOutWithASmile]]

* [[spoiler:TheGwenStacy]]

* [[spoiler:HeroicSacrifice: Heals Shu rather than herself and bleeds out. Her Void getting shot then causes the Apocalypse Virus to rapidly manifest itself and her corpse shatters shortly thereafter.]]

* [[spoiler:KilledOffForReal]]

* [[spoiler:TheLostLenore: To Shu.]]

* [[MrFixit Ms. Fixit]]: She can heal ''anything''. Like a robot. [[spoiler:Or a bridge.]]

* [[spoiler:TooGoodForThisSinfulEarth]]

* [[spoiler: TheDogBitesBack: The moment Hare died and Shu turned FallenHero, life has been hell for Souta. Come Episode 17...]]

* [[spoiler:MyGreatestFailure: Causing Hare's death.]]

* [[spoiler:FaceHeelRevolvingDoor]]

* [[spoiler:BitchInSheepsClothing]]
* [[spoiler:BlondesAreEvil]]

* [[spoiler:DisneyDeath: It appeared as though she was killed off by Inori in Episode 16, but Episode 17 reveals that she's still alive and merely had her hand injured. She is shot in Episode 22 and is seemingly dead until she is shown with Da'at members, still alive but wounded.]]

* [[spoiler:FaceHeelTurn: Turns the school against Shu before joining Gai.]]

* [[spoiler:ManipulativeBitch]]
* [[spoiler:MurderTheHypotenuse]]: Although never outright stated, it's very clear that she [[spoiler:wishes to kill Inori]] after finding out that [[spoiler:Gai]] seems to need her more. Were it not for being surrounded by many people who would most definitely have objected, [[spoiler:and the fact that Inori is BewareTheQuietOnes brought UpToEleven]], she likely would have not succeeded.

* [[spoiler: SexForServices: At her lowest, a desperate Arisa sleeps with Nanba to ensure the success of her plot against Shu's tyranny.]]

Her Void is a scouter that allows the user to see long distances. [[spoiler: When fused with Argo's Void, it becomes a black hole blaster.]]

A student who first appears [[spoiler:after the Lockdown and is somewhat of an instigator of violence. He becomes a member of Shu's Secret Service.]]

[[spoiler:His Void is a glove that stops firearms.]]

* [[spoiler:KilledOffForReal]]

* [[spoiler:OutGambitted: He really didn't factor Shu into his plans.]]

Nanba's henchman and a student who first appears [[spoiler:after the Lockdown. He becomes a member of Shu's Secret Service.]]

[[spoiler:His Void is a meteor hammer that can electrocute people.]]

* [[spoiler:KilledOffForReal]]

A student [[spoiler:who becomes a member of Shu's Secret Service.]] She works together with Miyabi.

* [[spoiler:KilledOffForReal]]

A student [[spoiler:who becomes a member of Shu's Secret Service.]] She works together with Ritsu.

* [[spoiler:KilledOffForReal]]

->'''Voiced by:''' MinakoKotobuki (Japanese), Apphia Yu (English)

->'''Voiced by:''' Yomoyuki Higuchi (Japanese), Christopher Bevins (English)

->'''Voiced by:''' Creator/AkenoWatanabe (Japanese), Kara Edwards (English)

->'''Voiced by:''' Creator/YuShimamura (Japanese), Tia Ballard (English)

* DespairEventHorizon: Crossed it after [[spoiler:Hare's death and the Void Ranking System.]] Every appearance since has had him as an [[DeusAngstMachina empty shuddering shell of the person he used to be.]]

* WrongGenreSavvy: His plans would work in some universes. This one just [[spoiler:ends up with Hare getting killed.]]

* OneHitKill: Those pliers of his basically give their wielder the [[{{Tsukihime}} Mystic Eyes of Death Perception]], allowing them to kill ''anything'' with a single blow if they aim it properly.

* TheSpock: Brings a harsh dose of reality to the school after the lockdown goes into effect. Even since then, his emotions seem to be completely under his control; the one time he has displayed overt emotion since was a calculated gesture [[spoiler:to get Shu elected StudentCouncilPresident.]]

* TheStoolPigeon: [[spoiler:Of the Betrayer Barry variety. He ends up selling out Shu to secure treatment for his sick little brother. Especially jarring since Shu was under the impression that they had sucessfully talked over their differences.]]

* VillainousBreakdown: After Shu busts him infront of the entire school, he pulls a gun on him. Needless to say, it doesn´t work.

->'''Voiced by:''' Minami Tsuda (Japanese), Carli Mosier (English)

!Hare Menjou

----
!Souta Tamadate

----
!Yahiro Samukawa

----
!Arisa Kuhouin

----
!Kanon Kusama

----
!Hirohide Nanba

----
!Takaomi Sudou

----
!Ritsu Takarada

----
!Miyabi Herikawa

* ZettaiRyouiki