交響：イクサ・フィストオン
Reverberation: IXA Fist On
The year 2008.
Wataru is testing out the latest violin he has made, and is disappointed to find the sound quality not up to his expectations. Bringing the violin outside the mansion, he burns it just when Shizuka is entering. Shizuka tries to salvage the violin in vain, and Wataru breaks into a fit of depression again.
The year 1986.
In Café mald’amour, Shima hands Jirou a Fangire Slayer, recognizing him as a member of the Aozora Organization. Shima and Yuri also learn of Jirou’s name at this time. Yuri starts singing praises about Jirou, and Shima comments that it is rare to her using feminine words. As a result, Yuri gets embarrassed and even slaps Shima at the arm. Soon after, Otoya comes visiting, asking for Shima to keep his promise of letting him into the Aozora Organization. However, due to lack of witnesses to his heroic deeds, he is merely mocked by everyone in the cafe for fainting after just drinking coffee, and eventually knocked out by Yuri with an uppercut.
2008.
Wataru is trying to burn another of his violin creation, but Shizuka manages to stop him in time this time. She brings Wataru to see a man waiting at the mansion gates, who is strangely in a daze while looking intently at the mansion. Bringing back his attantion, Shizuka introduces him as Oomura Takeo（大村 武男）, a man who is well-known for his repairs on violins, and shows him the violin that Watrau was about to burn. Holding the violin in his hand and observing it closely, Oomura walks to the burning tin and places the violin into the fire, to Shizuka’s shock. She attempts to salvage it again, but Wataru stops her. He tell Oomura that he wishes to make a violin like his father’s on his own without the help of anyone else, and Oomura respects his decision, but he asks to see the violin made by Wataru’s father.
Wataru brings Oomura into his workshop, and while Wataru is retrieving the Bloody Rose, Oomura goes into a trance, as though hearing a melody in the room, while having a smile on his face. Wataru brings his attention back again with the Bloody Rose in his hands. Oomura, holding the violin dearly and examining it, tells Wataru not to make a violin like the Bloody Rose, but to make a violin that is of his own. Before Oomoura leaves, Wataru has a change of heart, and asks him to teach him in violin-making.
1986.
A musician is playing a black violin in her home when she is attacked by a shady Oomura, donning a cap and shades.
In Café mald’amour, Shima lets Otoya in on a case involving attacks on people who had won the black violin, known as the Black Star, in auctions. Kido, now skeptical about Otoya, tells Shima to stay away from Otoya for his sake, but is surprised when he sees Buruman acting friendly with Otoya, since Buruman does not get close to people easily. He carries Buruman away when Otoya tries to kiss him. Otoya assures Shima that he will prove his worth to him this time, then comments on Kido always playing the songs of Onyanko Club（おニャン子クラブ）. Both Shima and Kido expresses their interests in member number 32: Yamamoto Susan Kumiko.
The next day, Yuri expresses concern over Shima letting Otoya know know about their cases, but Shima gives the reason of Otoya being an interesting person. Yuri then asks about the Rider System the Aozora Organization has been planning: the IXA (Intercept X Attacker) system, and Shima replies that it is near completion, giving them a chance to finally destroy the Fangires completely. Yuri then makes a request to Shima to give IXA’s power to her when it is completed.
2008.
At the gym, Shima tells Megumi about hearing her proposal for the wearer of the IXA system to be on rotation, and remains indifferent to it, an indirect way of rejecting the suggestion. Megumi asks for the reason to this decision, and Nago appears, answering for Shima that he is simply far more superior than her in every aspect for IXA. A disheartened Megumi vents her frustrations through speaking bad about Nago, but Nago calmly tells her to complain to IXA, for it is the one who chooses its own user.
Back in Wataru’s mansion, Wataru is undergoing Oomura’s lesson, with Oomura teaching very patiently. Shizuka tries to bring them some tea, however due to her clumsiness, she drops the tray, causing a racket. The noise gets worse when Shizuka topples a cart when getting a cloth to clean up, and Oomura is very affected by the noise, even falling onto his knees. Wataru tries to help him up, but Oomura pushes him away and leaves, abruptly ending their lesson for the day.
1986.
At an masquerade auction, Jirou and Yuri are on a mission to obtain the Black Star, which is one of the items on auction. Oomura is also one of the guests present. Things seem to be going well for the duo when Otoya, with a Tengu mask, arrives, vying against Yuri for the supposedly cursed violin. Yuri contacts Shima when Otoya ultimately pushes the price to an insane 200 billion-yen, and under Shima’s orders, Jirou knocks Otoya out, and the violin is finally won by Yuri at a price of 200 million and one-yen.
With the Black Star in her hands, Yuri is now randomly strolling along with the protection of Jirou, waiting for the suspected Fangire to come attacking. Though Jirou assures her safety under his protection, she comments that she cannot always rely on him if she is to become IXA. Now resting on a bench, Yuri takes out the Black Star, wishing to play a tune or something. Jirou waits in anticipation initially, but eventually moves to another bench a distance away when screeches emit out from the violin under Yuri’s playing. Otoya shows up, telling her to stop and hand the violin to him, for he can hear the ’screams’ of the violin. Being ignored like usual, Otoya tries to get it the hard way and gets punched by Jirou instead. Leaving the unconscious Otoya behind, the pair continues their stroll, not knowing that Oomura is watching them.
2008.
Back at Wataru’s workshop, Oomura has resumed his lesson with Wataru with much patience. Out of curiosity, Wataru asks if Oomura has made any violins of his own. Oomura replies that he has made one, but does not elaborate more about it.
At Megumi’s favorite eating house, Megumi is trying to bribe Nago for the rotation of use of the IXA system with lunch. As expected, despite her sweet words, Nago refuses the proposal, telling Megumi that IXA already belongs to him in the first place. He even puts her down by commenting that it is rude to even ask for favors in such places. When Megumi is about to start on her lunch, Nago sees Oomura outside and after checking his list of wanted offenders/criminals, foots the bill and leaves to go after him.
1986.
Yuri continues her terrible playing of the Black Star at a pier, causing even the fishes to die from the noise. Otoya, showing up again, asks her to stop to no avail. Soon, they hear a voice, and they see Oomura ordering Yuri to return the violin, deeming her unqualified for the Black Star. Otoya agrees readily to this statement, and after a brief smile, Oomura transforms into the Frog Fangire. Seeing this turn of events, Otoya confronts the Fangire head on, but he is obviously no match to the Fangire and falls into the waters. Jirou then comes charging, and the 2 members of the Aozora Organization fights the Frog Fangire with their Fangire Slayers in synchronized attacks. The Fnagire manages to give them the slip with his bubble attacks, knocking Yuri unconscious as a result, and Jirou gives chase. Meanwhile, Otoya manages to get himself out of the water.
Jirou catches up with the Fangire and telling him he has to die, Jirou transforms into Garulu, unbeknown to him that he has done so right in front of Otoya’s eyes. Garulu and the Frog Fangire have a fierce fight, but due to an advantage in terrain, the Frog Fangire escapes into the waters, leaving a frustrated Garulu. Ramon shows up, asking Garulu the reason for his alliance with the humans. While Garulu transforms back to his human guise, the last of their partners, Riki（力） shows up, reminding Jirou that humans exist only as food for them. Jirou then finally informs them about his plans to use the humans to destroy the Fangires, who have destroyed their respective clans, making them the last of their kinds.
2008.
Oomura is enjoying a melody on his music player, which is actually one of Otoya’s pieces. However, his appreciation of this soft melody is disturbed by a rock band performance. Becoming agitated as a result, Oomura crashes the performance, destroying the equipment and beating the members up. He is stopped by Nago, who wants to apprehend him for repeated offenses of violence. Unable to curb his agitation, Oomura transform into the Frog Fangire in front of Nago and attacks him, but is countered by Nago and his IXA Knuckle.
Meanwhile, at the Kurenai mansion, Wataru is still working on his violin. Kivat warns him about the suspicious Oomura, but Wataru remains skeptical to Kivat’s notion. Shortly after, the Bloody Rose starts sounding, signifying another appearance of a Fangire. Wataru and Kivat soon catch sight of the escaping Frog Fangire, and transforming into Kiva, clashes with the Fangire. Kiva has a tough fight against the Frog Fangire and his rifle, and decides to use the Basshaa Fuestle. Being the superior marksmen, Kiva Basshaa Form disarms the Fangire and shoots him into submission, causing him to revert back to his human form. Kiva, shocked to see Oomura, transform back into Wataru, and the 2 of them remain dumbfounded for some time. Wataru walks up to Oomura to learn more, but he runs away without saying a word.
The escaping Oomura collapses from his injuries from the previous fight against Kiva and rests. However, his time of peace is brief as he hears footsteps, and sees Nago walking towards him. Having no other choice, Oomura transform into the Frog Fangire again. Nago holds up the IXA Belt, wears it, and then tranforms into Kamen Rider IXA（仮面ライダーイクサ）. The Frog Fangire advances on IXA with a sword, but his attacks prove useless and even get turned against himself. Telling the Fangire to return his life back to God, IXA switches from Save Mode to Burst Mode, burning the Frog Fangire with the resulting flames.
Oomura Takeo（大村 武男）, portrayed by Murai Katsuyuki（村井 克行）
Buruman is unexpectedly close to Otoya, to Kido’s distaste
Otoya with his Tengu mask at a masquerade auction
Oomura’s fashion choice back in 1986
Megumi tries to bribe Nago into letting her have a chance in using IXA
The last of their respective clans: Jirou, Riki（力）, and Ramon
Nago stops Oomura from creating more chaos
Holding the IXA Belt in his hand, Nago transforms into…
Kamen Rider IXA（仮面ライダーイクサ）
Transmission into Burst Mode
