Hiryu Kakogawa

Hiryu Kakogawa (加古川 飛流) is a young man who transforms into Kamen Rider Another Zi-O in the Another Rider Saga timeline.

Forms
 Kamen Rider Another Zi-O "(electronic beat) Kamen Rider Zi-O!"

- Transformation announcement Hiryu transforms into Kamen Rider Another Zi-O (仮面ライダージオウ) by inserting the Another Zi-O Ridewatch into the D '9 Slot on the nother Ziku-Driver. His base form's visor reads "Rider" (ライダー), while the logo on his forehead reads "Kamen" (カメン) in.

Zi-O consists of the following parts:
 * Caliber N (キャリバーN) - Zi-O's helmet. 'N' stands for Negative.
 * Clock Blade A (クロックブレードN) - The clock hands on the Caliber N. It is a data collection device. The long hand, Baryon Hand M (Barion Hando M) predicts temporal information, such as enemy timing, while the short hand, Meson Hand H (メソンハンドH) measures spatial information, such as the distance between Another Zi-O and the enemy as well as landing points of finishers.
 * Ow Signal (オウシグナル) - The circular section where the two Clock Blades meet. It feeds gathered information to Another Zi-O, derive optimum solution to problems, and adjust internal systems of Another Zi-O.
 * Indication Eye (インジケーションアイ) - The visor which spells out "Rider". Sensors with a 270° viewing angle is built into the compound eye.
 * Kamen Dial (カメンダイアル) - Another Zi-O's faceplate. It invokes an analog clock face, and is made using a multilayer structure composed of the special metal alloy Graphenium (グラフェニウム). The Kamen Dial is described by the TV Asahi website to have a beautiful white lustre finish.
 * Crash Bezel (クラッシュベゼル) - The metal frame surrounding the face. It is composed of Graphenium.
 * Core Ryūzu (コアリューズ) - The 'button' on Zi-O's left cheek. It is an information management unit that stores combat data.
 * Oval Light Tecter (オーバルライトテクター) - Another Zi-O's shoulder and chest armor. A metal coating called Graphenium Coat (グラフェニウムコート) has been applied, raising durability. As a result, the Oval Light Tecter is not only lightweight, but is also 200 times stronger than steel.
 * Mid Band Liner M (ミッドバンドライナーM) - The silver band that runs vertically across Zi-O's torso, it connects the Ziku Driver to the head, converting energy made by the Driver into bioenergy.
 * Time Rush Arm (タイムラッシュアーム) - Another Zi-O's arms. Nanoscopic "Nanotube Muscle" (ナノチューブ筋) tubing covers it, increasing strength.
 * Flex Arm Girder (フレックスアームガーダー) - Another Zi-O's forearm armor. It is composed of the shock-absorbant material AMsein (アムセイン), allowing it to absorb and disperse physical attacks with ease.
 * Zi-O Leap Hand (ジオウリープハンド) - Another Zi-O's hand units. It is covered with the purple metal Graphenium Bite (グラフェニウムバイト) units, raising destructive punching power.
 * Adjustrike Suit (アジャストライクスーツ) - Another Zi-O's bodysuit. It automatically repairs minor damage.
 * Time Rush Leg (タイムラッシュレッグ) - Another Zi-O's legs. Nanoscopic "Nanotube Muscle" (ナノチューブ筋) tubing covers it, increasing strength.
 * Counter Pad (カウンターパド) - Zi-O's kneepads. It reads combat data on the field and sends it to the helmet.
 * Flex Leg Girder (フレックスレッグガーダー) - Another Zi-O's shin protecters. It is composed of the shock-absorbant material Amsein, allowing it to absorb and disperse physical attacks with ease.
 * A Zi-O Leap Shoes (A ジオウリープシューズ) - Another Zi-O's shoes. The tip is covered with the Graphenium Bite (グラフェニウムバイト) units, increasing destructive kicking power. Additionally, The katakana for the word "Kick" (キック) in engraved on the soles.

This form has one finisher:
 * Ziku-Driver finisher:
 * Time Break (タイムブレイク): A series of magenta-colored "Kick" (キック) characters appear and circle the enemy. Zi-O then jumps high as the "Kick" characters merge into one and imprint on Zi-O's right foot as Zi-O performs a flying kick into the the enemy.

Appearances: Another Rider Gaiden 1, Another Rider Gaiden 2, FUTURE Another Rider Gaiden

Equipment

 * A black variant of Ziku-Driver
 * Another Ziku-Driver
 * Ridewatch
 * Anotherwatches - Transformation trinket. As Hiryu already possessed the Zi-O Anotherwatch, he can create past versions of Anotherwatches by targeting past contract holders and absorb the essence with a blank Anotherwatch.

Portrayal
Hiryu Kakogawa is portrayed by Yu Sakuma (佐久間悠).

Etymology
Kako (加古) is a homophone of the Japanese word for Past (過去).