Shitoron āmuzu! Hikari no ten~purā!
Born from the darkest depths of Helheim, the Citron Lockseed was discovered by Tomohiro after his first encounter with Sid resulted in his Sengoku Drivr being destroyed, the blast sending him flying from Yggdrasil Tower and leaving him powerless. Despite this colossal setback, he decides to travel to Helhiem and find something to defeat Sid once and for all. Once in Helhiem, he had to earn the Citron Lockseed by singlehandedly fighting a Bull Inves that guarded the Secret Grove at the centre of the Forest to a standstill. After beating the Bull, Tomohiro returned to Earth with not only the Citron Lockseed, but a lost Sengoku Driver that the Bull Inves had obtained from the last Armored Rider that tried to search for the Grove.
It's code is LS-Ten and is labelled as Class A.
Shirokishi's main form [at the height of 179 cm and weighing in at 105 kg] is Kishi's final form, and his most powerful. His strength and endurance far exceed his first form, [With punching power at 18.2 t. and kicking power at 21.1 t.], and is also much quicker, with a jumping height increased by eleven [at a stunning 50 m], and speed that is more than capable of catching up to any vehicle [at a much quicker 111 m. per 6.2 seconds]. The Citron Lockseed also grants him the ability to glide on strong wind currents using the cape on his back.
Shirokishi is armed with the Citron Cutter [a large battle axe] and the Hikari Shield. He has three types of attacks:
Squash: Very similar to his old form, Kishi throws his shield at the enemy like a boomerang, disarming his enemy before knocking him down.
Au Lait: Charging up his axe, he can summon an energy projection of a giant two-handed battle axe, allowing him to crush his opponents or smack them aside quite easily.
Sparking: Leaping up into the air, Shirokishi can than use his cloak as a makeshift glider, divebombing his enemy before executing a devastating Rider Kick.