Kotaro Sakuma

"Big Star! Koguma Skyblue"

- Koguma Skyblue's role call

Kotaro Sakuma (佐久間 小太郎) is a young boy who defied Jark Matter's occupation of Earth with his younger brother, Jiro Sakuma. Inspired by Stinger, Kotaro decide to join the Rebellions. He later gain his own personal Kyutama from Shou Ronbou's predecessor, Big Bear to become Koguma Skyblue (コグマスカイブルー), the eleventh member of the Kyurangers. His alternate form is called Ooguma Skyblue (オオグマスカイブルー).

Character History
While the adults refused to defy Jark Matter to make it easier for everyone, Kotaro and his brother refused to accept the oppression, leading to them being caught up in the fight between the Kyurangers and Jark Matter which resulted in the boys being caught by Stinger who, though ordered by Eriedrone to kill them, decided instead to keep them hostage so as to force the eight Kyurangers to surrender their Kyutamas. The brothers' bond reminded Stinger, secretly a Rebellion spy operating within Jark Matter, of that he once had with his own older brother and so he told them to watch out for each other. Ultimately, while Eriedrone intended to kill the brothers regardless, Stinger dropped his facade at the last minute, saving the boys before joining with the Kyurangers to take down Eriedrone, raising the hopes of the previously disillusioned adults.

Some time after the Kyurangers victory, Kotaro follows the Kyurangers actions and locations, even going as far as getting into areas which were under Jark Matter's control. As Garu, Raptor and Stinger headed the last of the five Moraimarz they've taken down, he got caught by the Indaver but was saved by Stinger. He then reveals his intentions to join the Kyurangers to Stinger. Stinger brought Kotaro to the Orion, much to Shou Ronbou's surprise of bringing a kid in. As the Kyurangers were in a dire situation, Shou decided to get into action, telling Kotaro to stay and keep watch of the Orion.

After the Kyurangers made a hasty retreat, save for Spada, Kotaro still begs Shou to let him join the Kyurangers. He was left behind again when Shou went out alone in the rescue mission. After a successful mission and Shou suggesting a new name of the team due to having a 10th member, though rejected by the team, Kotaro still insist that he should be the 11th Kyuranger. This went to the point the Kyurangers were annoyed by his persistent attitude.

Personality
Kotaro has a high sense of bravery, being not afraid of defying Jark Matter. He was also protective of his younger brother and the people dear to him.

After seeing the Kyurangers being able to bring hope to others, especially sharing a common brotherhood bond Stinger had whom Kotaro inspired, Kotaro went all the way to follow them, even intending to join the Kyurangers. His wish became true after being chosen by Big Bear and the Ursas Kyutama to be the 11th Kyuranger

Portrayal
Kotaro Sakuma is portrayed by Shota Taguchi (田口 翔大).

Appearances

 * Icon-kyuranger.png Uchu Sentai Kyuranger
 * Space.5: 9 Ultimate Saviors
 * Space.8: Secret of Commander Shou Ronbou
 * Space.9: Burn! Dragon Master
 * Space.10: A Small Giant, Big Star!