Mitsuzane Kureshima

Mitsuzane Kureshima (呉島 光実), nicknamed Mitch (ミッチ) is Kamen Rider Ryugen (仮面ライダー龍玄 [リュウゲン]). He uses the Budou Lockseed.

Becoming Ryugen
As Kota returns from the Helheim Forest, Mai and Mitsuzane visit him. As they are wondering what happened to Kota, he tells them that he encountered a white Armored Rider (Zangetsu), who attacked him with no hesitation and thinking that he kills Yuya in the forest. He then tells them the true purpose of the Inves Game. After telling them, Kota started to feel scared after the incident as he quits the team. Mitsuzane decides to buy the Sengoku Driver from Sid, who knows his brother and the company that his father is working for. Sometime later, after Team Gaim is done dancing, Team Invitto's leader, Hideyasu Jonouchi appears as he duels them. Mitsuzane then transforms into Armored Rider Ryugen as he fights an Inves.

Personality
He is a member of Team Gaim and Kota sees him as his younger brother. He is the son of a director of the Yggdrasil Corporation and attends an elite high school, a side of him which he keeps hidden from everyone. Living under his brother's shadow, he wants to live freely and break free from the path established for him, as such he sees Team Gaim as family due him being able to be himself while there. He also respects Kota as sees the leader as a role model, basing his own beliefs around Kota's and always want to do more to help others. He also harbors a secret crush on Mai, which drives him to ask for a Sengoku Driver from Sid and become a rider himself, when Mai is at wit's end due to Kota being shaken to the core after the encounter with Zangetsu. He uses the Budou Lockseed and has a Chinese Armor motif.

Arms
Like with the other Lockseed-using Kamen Riders, Kamen Rider Ryugen's forms are called Arms (アームズ).

Devices

 * Sengoku Driver - Transformation Device
 * Lockseed-exclusive weapons:
 * Budou Ryuhou - Ryugen Budou Arms' personal weapon
 * Trigger Magnum - Ryugen Double Arms' personal weapon
 * Lockseeds - Gives access to Budou's form changes, depending on which arm the lock is

Vehicles

 * Sakura Hurricane - Shared Rider Machine with Gaim

List of Appearances

 * Kamen Rider Gaim
 * Episode 1 - Transform! The Orange from the Sky!? (debut as Mitsuzane Kureshima)
 * Episode 2 - Certain Kill! Pine Kick!
 * Episode 3 - Shock! The Rival's Banana Transformation!?
 * Episode 4 - Birth! The Third Grape Rider (debut as Kamen Rider Ryugen)
 * Episode 5 - Revival! Ichigo Arms of Friendship!
 * Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle
 * Kamen Rider Gaim: Sengoku Battle Royale

Portrayal
Mitsuzane Kureshima is portrayed by Mahiro Takasugi (高杉 真宙).

As Kamen Rider Ryugen, his suit actor is Daisuke Satō (佐藤 太輔), who was previously the suit actor for Gokai Silver in Kaizoku Sentai Gokaiger and Beet J Stag/Stag Buster in Tokumei Sentai Go-Busters.