Izumi Sena/Relationships

Kohaku Oukawa




Hajime Shino


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Midori Takamine


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Mitsuru Tenma


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Shinobu Sengoku


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Sora Harukawa


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 * In one of Sora's minitalks from Advancing to the Future/Next Door, Sora tells Anzu that Izumi went shopping with Sora. He also added that "Sena-senpai has a very kind color".



Tetora Nagumo


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Tomoya Mashiro


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Tori Himemiya
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 * Fellow members of the Tennis Club. Tori has little respect for Izumi as his senior, while Izumi often enjoys teasing Tori by making him run all over court during tennis practice. Izumi calls him "Momo-kun" as an alternate reading of the "tou" in "Touri" as well as "Princess" from the "hime" in "Himemiya". He enjoys mocking him like his other juniors. However despite the teasing, Izumi seems to be thankful that Tori would hear him out for his troubles with Makoto.


 * Izumi also shows in Totally Twisted that he doesn't hate Tori's company, appreciating the fact that their matches allow him to vent.

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Tsukasa Suou
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 * Tsukasa is a fellow member of Knights, who Izumi often teases and bullies, although he gets easily irritated when Tsukasa challenges his authority and snaps back at him. Despite this, they have a fond relationship, Izumi always monitoring Tsukasa's sweet tooth much to the younger boys dismay. Izumi typically enjoys luring Tsukasa in with a friendly and gentle demeanor, only to bully him and shock him. Tsukasa dislikes this, but has grown used to it over the year. Considering Izumi has grown to respect Tsukasa more as a member of Knights, he still enjoys to mess with him.


 * Izumi is the one to usually scold Tsukasa for things, ranging from his sweet tooth, to doing impulsive things to boost the reputation of Knights, like in Duel. Even with the rocky aspect in their relationship, Izumi holds a certain fondness for Tsukasa, considering he reminds him of Leo a bit.


 * Izumi often bullies and teases Tsukasa, and as a result, Tsukasa quickly learns to be suspicious of Izumi's intentions. He mouths off to Izumi frequently. Of all of his upperclassmen in Knights, Izumi is the most strict toward Tsukasa. In Fortune Banquet, for example, Izumi scolds and punishes Tsukasa for ignoring him and for keeping his problems to himself. That said, Izumi has a deep sense of gratitude toward Tsukasa for giving Knights new life and purpose through his persistent idealism. Izumi is motivated not to let down Tsukasa's faith. At the same time, Tsukasa greatly respects Izumi as a talented upperclassman, in spite of his peculiarities.


 * In Butterfly, it is shown that Tsukasa is increasingly unsatisfied with Izumi's harsh attitude and refusal to show genuine affection, as he displays with Makoto. Although Ritsu often points out that Izumi's scoldings are a display of fondness in this case, Tsukasa still wants to be spoiled and praised at times by Izumi. Toward the end of the year, Izumi occasionally begins to show a more open, honest affection.

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Anzu
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 * While Izumi dislikes how close she is to Trickstar, he doesn't see her as an opponent or someone to worry about. He respects her skills and dedication as a producer. Even if he typically is harsh towards her, he does fuss over her when she's overworking herself, saying how "s~o annoying" it is to see how worn down she is in WANTED!!!.


 * Izumi initially considers Anzu an amateur producer and a bug getting close to his Yuu-kun. In Duel however, he learns Anzu and Makoto's relationship is nothing to worry about and begins recognizing her skills.


 * Izumi views Anzu as a bridge between Makoto and himself. Yet, despite expressing disappointment when Anzu doesn't bring Makoto along with her, he still thoroughly helps with her work in Pirates and Test of Courage. In Test of Courage, he even offers to take Anzu home on his bike, it being late at night.


 * By winter he has grown very fond of her and seems to consider her akin to a little sister during StarFes, cooing that if she wanted hot tea he would give it to her, and knitting her a hat with pom-poms, saying that it fit her and she looked cute. He behaves similarly warm to her during Dance on Ice, making her tea and fussing over her health. Leo comments that "I bet your nosiness escalates because Anzu accepts your affection properly."

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HiMERU
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 * During the Butlers event, HiMERU and Izumi initially got along well. This quickly changed when Izumi started demanding retakes, feeling unsatisfied with everyone's acting, causing HiMERU to become agitated enough to tell him to shut up.

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Ibara Saegusa
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Jun Sazanami
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Natsume Sakasaki
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Yuzuru Fushimi
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Chiaki Morisawa
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 * Fellow members of Class 3-A. Izumi seems to have a spirit of competition towards him, such as demanding a rematch in WANTED!!! when the two tied during a dance game because it was cut short.

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Eichi Tenshouin
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 * Though they are fellow classmates in 3-A, they hardly interact. Izumi is furious when he sees the member list of Knights Killers that Leo creates during Rebellion, and acknowledges that all the members that Leo picked are some of the strongest idols in the academy. The roster included Eichi, of course, whose smug and aloof attitude throughout the event also intimidated Izumi.


 * During prologue of Cheackmate Izumi notes that he doesn't put all blame for what happened to Leo on Eichi. He also shows concern for his poor health which probably means Izumi doesn't really opposed to him.


 * During Management Story 6 of Eichi's sub stories Izumi agrees to help Eichi practice ball dance for upcoming party in exchange for a favor.

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Hiyori Tomoe
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Kanata Shinkai
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Leo Tsukinaga
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 * Fellow member of Knights and his leader, Izumi calls him Ousama, or "King," as a nickname derived from the last vowel of Leo's name. They knew each other since first year, but information about their relationship then is not known. Izumi states that he would reject Leo's pursuit of friendship with him at every term, but eventually relented, and they eventually became close.


 * Back in second year, Izumi was typically frustrated with Leo's chaotic and reckless antics. They typically bickered with each other. Despite this, Izumi was impressed and respected Leo's talents as a composer and musical writer. Even though Leo griped about Izumi's nagginess, he appreciated that Izumi wants to care care of him. Leo had a tendency to tell Izumi that he loves him often, as well as calling him beautiful, clinging to him, though Izumi often reacted with disbelief. Despite his behavior, Izumi loved Leo's songs and singing for him, and he expressed Leo's music made him feel at ease.
 * Also, at some point Leo had composed a song for him titled "A Little Sena Izumi" and gave it to him before Leo disappeared from the school. He also has an iPod filled with songs Leo composed for him before he disappeared.
 * Izumi used to visit Leo's house in the past, though no longer does. Ruka, Leo's little sister, likely appears to be familiar with him because of this.


 * Later in their second year, Leo and Izumi's genuine feelings of care and affection for one another turned into co-dependency. Leo became obsessed with making Izumi happy and believed Izumi was his muse, and Izumi had never had anyone so head over heels for him that he wanted to keep Leo's affections for him no matter what. As Leo's mental state deteriorated due to outside stress (seen in Checkmate and Horror Night Halloween), he grew more vicious and violent, and Izumi grew more desperate and in need of Leo's validation. They began to fight constantly, to the point of hurting one another and blaming one another. As Leo became increasingly rejected by his peers and lashed out at Izumi more and more, Izumi finally couldn't take it and distances himself from Leo. Leo would eventually break down completely from the stress of the war and having no one he could trust around him, and eventually withdrew from school.


 * Once Leo leaves school, Izumi grew more unstable, moody, and harsh. He takes out his feelings on Makoto, seeking gratification and affection as a desperate means to attempt to protect someone he cares about, which he feels he failed to do with Leo.


 * When Leo finally returns, their relationship is still rocky, tense and awkward from all the unspoken issues between the two of them, Izumi feeling like it's pointless considering Leo had changed so much. In King's Horseback Ride, Izumi is concerned after hearing Leo had been spotted at school once more, and instantly grows irritated with Leo's much more manic behavior and argues with him once he returns. After the events of Judgement, Leo returns back to Knight's as their official leader once more and they begin to work on their relationship again. In Star Festival, Leo tends to compare Izumi to a nagging mother, but enjoys to be close to him to feel his warmth, which flusters and irritates Izumi. Leo typically expresses jealousy over Izumi's attachment to Makoto, but accepts it since he had been gone anyways.


 * In the end, Leo and Izumi have been friends for a few years, and rely on each other quite a bit. Even after Leo returned and their relationship was very rocky, they still end up becoming close once again over the year. Although Izumi mostly calls him "Ousama," he occasionally calls him Leo-kun like he did in second year. At present, they both live in Italy pursuing their own passions (composing and modeling), and see each other often.

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Madara Mikejima
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 * Madara and Izumi are classmates in 3A. They're both protective of Leo and tried their best to support him, but separately, in Leo's difficult time since Checkmate.

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 * In Next Door, Madara contacted Izumi (who had just come back from overseas) by phone to tell him about what happened with Leo in A Dark Nights Passing. Izumi thanked Madara for taking care of Leo in the GFK incident, something that should have been done by Izumi or one of the members of Knights. He then chastised Madara in the next breath for doing risky stuff that could endanger the relationship that he treasured so much with Leo, and advised him to focus on his idol business more as it was what those who loved Madara would want for him.

Nagisa Ran
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Nazuna Nito
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 * Nazuna it the captain of the Tennis Club in which Izumi is the vice-captain. Calls him "Nazu-nyan", possibly as a way of making fun of his speech difficulties. The two are not completely unfriendly, even knowing each others' phone numbers, but Izumi dislikes how he tends to interfere between him and Makoto and relentlessly teases and mocks him when he sees him. Like some others, Nazuna tends to dislike him for having a "horrible personality".

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Niki Shiina
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Rinne Amagi
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Tsumugi Aoba
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Wataru Hibiki
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Seiya Hidaka
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Gatekeeper
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