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{{Infobox/Character/Startcharacter | image name = Hideo.jpg|thumbja_name = 十六夜英雄|180pxromaji_name = Izayoi Hideo}}| ja_trans_name = Hideo Izayoi{{Infobox/Character/Appears| en_name = Mr. Izinski | anime debut anime_debut = {{episode|Yu-Gi-Oh! 5D's|40|ref}} | appears in appears_in_anime = ''[[Yu-Gi-Oh! 5D's]]''}}{{Infobox/Character/Personal | gender = maleMale | occupation = Senator of [[New Domino City]]}}{{Infobox/Character/Other | title = relatives | hidden = true |

'''Hideo Izayoi''' (currently unnamed '''Mr. Izinski''' in the dub) is the father of [[Akiza Izinski]], husband of [[Setsuko|Setsuko Izayoi]], and a senator of [[New Domino City]]. ==Biography=====History===[[File:AkizaAttacksHideo.jpg|left|200px|thumb|[[Akiza Izinski|Akiza]] attacking Hideo with her [[Psychic Duelist|powers]].]]When Akiza was a child, she always wanted to spend time with her father, but he was always busy with work. When she finally managed to get some free time with him to have a Duel, he received a call from work, which pushed her to awaken her [[Signer]] powers, hurting her father in the process. After that event, it is because of those same terrible powers, that he and his wife couldn't accept Akiza anymore and eventually ended up rejecting her. ===Dark Signers===After Akiza's Duel against the [[Dark Signer]], [[Misty Tredwell]] from which she results to be left unconscious, Hideo and his wife, [[Setsuko]], go to visit her, where [[Jack Atlas]] tells him the only person who can save her is [[Yusei Fudo]]. He goes to visit him, telling him about what happened between them and begging for his help. After Yusei agrees to help they both go back to the city, as then he was able to wake her up with the help of the [[Mark of the Dragon]]. However when she sees them, because of their past and the current events that have occurred she gets angry.  Thus she Duels against Yusei and he accepts, knowing that it is the only way for him to reach out to her. As the Duel progresses, Hideo notices that not only Yusei is protecting them from Akiza's psychic powers, but also "[[Stardust Dragon (anime)|Stardust Dragon]]". When he sees Yusei receiving real damage from Akiza's constant attacks, Hideo cannot stand it anymore and uses himself as a shield to protect Yusei. He tries to reason with her, but Akiza doesn't want to listen to him. Everything changes once Yusei is able to reach out to Akiza by countering her with his strategy.

Although As Akiza's powers are starting to destroy the room, she unknowingly gains control over them when she protects Hideo earlier debuted until later onfrom harm. After Akiza helps him, it has been seen on Yusei ends the series mainly because of the terrible incident involving him Duel. After that, Hideo and his daughter's psychic dueling powersare able to resolve their issues.

When After Akiza was a childmakes up her mind of fighting the Dark Signers, she always wanted to spend time with his wife expresses concern over her father, but he was always busy with workdaughter undertaking such a dangerous task. When she As they have finally managed to get some free time with him to have become a duelfamily again, thus Hideo convinces Setsuko that she should have more faith in their daughter. As he received a call from workunderstands that Akiza has been searching for that something to believe and that it lies ahead, which pushed her as also she wants to awaken find some purpose for her [[Signer]] psychic powers, hurting to be used. However Hideo tells her father in daughter that there is the process. After risk that event, it is because of those same terrible if she cannot control her powers, that he and his wife couldn't accept these could end up destroying Akiza anymore and eventually ended up rejecting her.

After Akiza's duel against the [[Dark Signer]], [[Misty Tredwell]] from which she results to be left unconscious, However Hideo and his wife, Setsuko, go to visit her, where [[Jack Atlas]] tells him the only person who can save her is [[confident that as long as Yusei Fudo]]. He goes to visit him, telling him about what happened between them and begging for his help. After Yusei agrees to help they both go back to the city, as then he was able to wake is by her up with the help of the [[Mark of the Dragon]]. However when she sees them, because of their past and the current events that have occurred she gets angryside Akiza will be alright.

Thus she duels against Yusei ===World Racing Grand Prix===Hideo and he accepts, knowing Setsuko are on the stadium on the opening day of the [[World Racing Grand Prix]]. This due to Akiza telling them that it is she will now participate on the only way for him to reach out to herPrix. As the duel progressesHowever as he sees his wife concern by this, still Hideo notices tells Akiza that not only Yusei is protecting them from Akiza's psychic powers, but also "they will witness her [[Stardust DragonTurbo Duel]]". When he sees Yusei receiving real damage from After Akizaloses to [[Andre]] and cries thinking that she wasn's constant attackst able to help the team, Hideo cannot stand it anymore and uses himself as a shield to protect Yuseicheers her up by saying that she did great. He tries to reason with herBecause of his seen determination, but Akiza doesn't want to listen to him. Everything changes once Yusei is able to reach out everyone else on the crowd starts applauding to Akiza by countering her with his strategy.

As Akiza===Ark Cradle===During Yusei's powers are starting to destroy the room, she unknowingly gains control over them when she protects Hideo from harm. After Akiza helps himDuel against [[Z-one]], he and Setsuko were seen cheering on Yusei ends the duel. After that, Hideo and his daughter are able to resolve their issues.

After When Akiza makes up her mind of fighting the [[Dark Signers]], his wife expresses concern over her daughter undertaking such a dangerous task. As they have finally become a family again, thus Hideo convinces Setsuko that she should have more faith in their daughter. As prepared to leave for medical school he understands that Akiza has been searching for that something to believe and that it lies ahead, as also she wants Setsuko told her to find some purpose for her psychic powers say a proper goodbye to be used. However Hideo tells her daughter that there is the risk that if she cannot control her powers these could end up destroying Akiza.Yusei

However ==Deck==The only known card in Hideo 's Deck is confident that as long as Yusei is by her side "[[Samsara Lotus (anime)|Samsara Lotus]]". ==Duels=={| class="wikitable card-list"|-! scope="col" | Opponent(s)! scope="col" | Episode(s)! scope="col" | Outcome|-| [[Akiza will be alright.Izinski]] || [[Yu-Gi-Oh! 5D's - Episode 040|40]] || No result|}