When anxious he has a habit to start smoking. Homura is calm, collected and described by those who know him more or less like Yasaka as a cool person with a good and gentle personality. He says later on that Minato has the power to actually determine who he is, even changing his mind "into that of an animal". Later on in the series, because of his reaction to Minato, he began to change into a woman. Even Tsukiumi, who called herself his rival, couldn't tell that they were the same person. Many people who see Kagari after they see Homura often think it's him at first, however begin thinking it's a different person right after.
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A running gag in the series is the inability to see that they are the same person. He wears a long black coat with a mask to disguise himself. As Homura, he calls himself a defender of Sekirei. Kagari always dresses nicely and is popular with everyone. He is apparently very good at seducing women, as he says to Miya that he has slept with many, trying to find his Ashikabi. One is as Kagari and the other is Homura. Homura has the ability to control and manipulate fire, has a habit of smoking when anxious and is quite powerful, as Tsukiumi speculates him to be the strongest unwinged Sekirei prior to being winged by Minato.
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His gender however is still undecided, as no full transformation has occurred. However, as Minato is a male, Homura begins to grow breasts and develops more "female" like traits. Unwilling to let Homura sacrifices himself, Minato winged him, saving his life. Refusing to be a trophy in the Director's game, Homura attempted to commit suicide through self-immolation, just as Minato and his Sekirei arrived. However, he was attacked by multiple Sekireis under orders to capture him.
Homura left the Inn to go after the MBI Director in order to bring an end to the Sekirei Plan. Near the end of the second stage, he's revealed to be the last unwinged Sekirei. Homura began reacting to Minato after he came to the Inn, causing Homura great stress over his potential Ashikabi being a male. For a long time, he lived under the alias 'Kagari', a popular host club entertainer (because he was looking for an Ashikabi although no matter how many women he 'meets' he did not react ) and only Asama Miya, Uzume, Matsu and Kazehana knew his true identity. Homura's power and gender were unstable (a running gag throughout the series prior to him being winged was when he's about to incinerate himself with his own fire, Tsukiumi would suddenly come out of nowhere to douse the engulfing flames ) however, he continues to think and act as a man even after his body started becoming female (called 'feminization' in the manga). This mission was given to him by Sahashi Takami. Homura is called the 'Sekirei Guardian' as he used to protect 'unwinged' Sekirei untill they found their Ashikabi.