Who Loves Heart the Most?

Who Loves Heart the Most? (だれかハートを一番愛したのか) is the forty-fourth episode of Kamen Rider Drive. It features the debut of Jun Honganji as a Mass Production Model Mach aka "Kamen Rider Jun" This also marks the final appearance of Brain.

Synopsis
Brain was cornered by Gold Drive and Roidmude 004, who wished to trigger a second Global Freeze. However, he was saved by Drive. Drive helps Brain escape but Kiriko is wounded in battle. Now aware of his own feelings for her, he feels very troubled while rescuing her. Meanwhile, Brain was looking into Medic’s sudden change after escaping. When he reached the fragment of his claw in Medic’s body and finds out the truth behind the change in her system, he also discovers that his very existence, along with Heart’s and Medic’s, is in terrible danger.

Plot
Drive escorts Kiriko to safety, while Mach and Chaser fight 004 and Gold Drive before the latter flee. Brain uses the stolen iPad to link into Medic's system and finds a shocking truth about her programming. She appears behind him with three Reapers but instead of running, Brain surrenders.

Kiriko was hospitalized after the event and while Chase and Go tries to take a visit, they see Shinnosuke at the front door of Kiriko's ward bringing some gifts and orders Chase to give them to Kiriko, much to Go and Mr. Belt's surprise. In the SSDC headquarters, news of all four Super Evolved Roidmudes had reached the Special Investigation Unit and Akio. With the second Global Freeze may affect worldwide, Rinna introduces Pikopiko 4, a lighter version of Pikopiko 3 with now five had been created. Rinna introduces the Mach Driver Production Model and its wearer Jun, as he demonstrated it and transforms into the first production model of Kamen Rider Mach, aka. Kamen Rider Jun. But an error occur where the suit suddenly turns immobile, and Akio gives them some more time to finish the suit.

Chase visits Kiriko and asks her if she harbours feelings for Shinnosuke, which she denies. Chase however, believes that she lied much like Shinnosuke, and sheds tears but willingly holds the burden as it makes him feel closer to be a human. Soon, several places had been declared a state of emergency and the police forces, including Special Investigation Unit are searching for the Promised Land. Meanwhile, Rinna and Kyu had stay all night to create Pikopiko 4 as much as possible. Heart chastises Brain for surrendering to Banno. Gold Drive reveals 004's creation, Sigma Circular and orders the party to head to the Promised Land. Brain adopts his true Roidmude persona and throws away his handkerchief as a first step of shedding his humanity.

At the Promised Land (a lakeside), Roidmude appears for the ceremony of the Promised Numbers, as police officers hide for guerilla attacks. The Kamen Riders arrive late and Genpachiro reveals that the location was leaked by "Mr. X" but Go denies to have use that nickname again. The Kamen Riders act first to attack the ceremony but Low-Class Roidmude and Reaper Legions hold their way. With the Super Evolved Roidmudes exhausted, Genpachiro and special forces tries to aid the Riders but the Sigma Circular activates and reveals its true purpose: to absorb and recreate the energies of Super Evolved Roidmudes for the creation of Global Freeze. But to stabilize its excess power, one must become a sacrifice to it and that person is Medic, whom Banno brainwashed and added with the trojan program. Her death would ensure that no healers will be existed should the Roidmudes begin to rebel. Seeing Heart loves her more than anyone, Brain relocate the target program from her body to himself, at the same time saving her from Gold Drive's trance.

Eventually, Brain's largest gambit put himself at death's doors, releasing a huge explosion and in his final moments wishes Medic to take care of Heart before rusting. Tired of his devilish acts, the Riders attack but once again occupied by their enemies until they finish them with Full Throttles. With Banno surrounded by Kamen Riders and Roidmude Executives, 004, whom surprisingly survives reveals that this place is not the Promised Land but rather a place for the ritual. Banno confirms this and reveals that he was the one that lured all of them here under the name Mr. X. He traps them in an electromagnetic field and for 004 to commit self destruct, seemingly kills all of them in one blow.

Cast

 * Shinnosuke Tomari (泊 進ノ介): Ryoma Takeuchi (竹内 涼真)
 * Kiriko Shijima (詩島 霧子): Rio Uchida (内田 理央)
 * Chase (チェイス): Taiko Katono (上遠野 太洸)
 * Go Shijima (詩島 剛): Yuu Inaba (稲葉 友)
 * "Krim Steinbelt"/Drive Driver's voice ("クリム・スタインベルト"/ドライブドライバーの声), Narration (ナレーション): Chris Peppler (クリス・ペプラー)
 * Jun Honganji (本願寺 純): Tsurutaro Kataoka (片岡 鶴太郎)
 * Rinna Sawagami (沢神 りんな): Rei Yoshii (吉井 怜)
 * Kyu Saijo (西城 究): Kenta Hamano (浜野 謙太)
 * Genpachiro Otta (追田 現八郎): Taira Imata (井俣 太良)
 * Brain (ブレン): Shota Matsushima (松島 庄汰)
 * Heart (ハート): Tomoya Warabino (蕨野 友也)
 * Medic (メディック): Fumika Baba (馬場ふみか)
 * Tenjuro Banno (蛮野 天十郎): Masakazu Morita (森田 成一)

Guest cast

 * Akio Togama (戸賀間 明夫): Kazuyuki Tsumura (津村 和幸)

Shift Cars & Signal Bikes

 * Car Used:
 * Drive
 * Type Change: Shift Wild, Shift Tridoron
 * Tire Exchange: N/A
 * Type Used:
 * Type Wild, Type Tridoron
 * Mach
 * Type Change: Shift Dead Heat
 * Tire Exchange: N/A
 * Form Used:
 * Deadheat Mach
 * Tire Blending used in Type Tridoron:
 * Attack 1.2.3
 * Bike Used:
 * Mach
 * Form Change: Signal Mach, Shift Dead Heat
 * Signal Exchange: N/A
 * Form Used:
 * Mach, Deadheat Mach
 * Chaser
 * Form Change: Signal Chaser
 * Form Used:
 * Chaser
 * Jun
 * Form Change: Tokujo-ka Key
 * Form Used:
 * Mass Production Model Mach

Errors

 * When Drive Type Tridoron is about to finish off 004, the Drive Driver announces "Hissatsu! Flare Spike Shadow!" before Drive assumes Type Tridoron Attack 1.2.3 with the belt announcing "Tire Kakimazeru: Attack 1.2.3!", without saying "Full Throttle!". This is something that the DX Shift Tridoron cannot do (unleashing a finisher during the Tire Blending).
 * When Deadheat Mach is about to finish off a trio of non-Reaper Legion Roidmudes, the Mach Driver Honoh announces "Hissatsu! Full Throttle!" before Mach spins the front wheel of the Zenrin Shooter, completely omitting the "Burst" and "Dead Heat" parts of the announcement.