Kingstone (Black Sun)

The are fragments of an organic mineral-like substance created by Kozo Minami and Soichiro Akizuki using the Creation King's extract, combined with the genetic material and vital photons extracted from migratory locusts. After being implanted into the waists of Kotaro Minami and Nobuhiko Akizuki, the Kingstones would rewrite the boys' biologies, transforming them into the Century Kings.
==Overview==
The Kingstones are an organic crystal made by Kouzou Minami and Soichiro Akizukit by extracting the genetic material and the vital photons of several migratory locusts and the Creation King's extract, with the locust plague and solar eclipse having a strange effect on the stones that caused it to have a higher purity and quality compared to the other stones. In its original form prior to being implanted into the Century Kings' waists, the stones were originally a single crystal covered in some kind of organic slimy substance, which was rather easy to break apart. Several years after the implantation process, the stone's halves would become more durable and mineral-like, as shown when Kotaro would toss the one of the pieces towards Nobuhiko prior to their final battle.
===Century King Creation===
The Kingstones' most notable usage were to transform Kotaro and Nobuhiko into Black Sun and Shadowmoon respectively on the day of the solar eclipse. After the two were implanted with the belts, the Kingstone would be inserted into the slot in the center of their respective belts, rapidly altering their physiologies and turning them into kaijin. The process is shown to be extremely painful, as seen where a young Kotaro would scream in pain as one of the scientists in charge of the conversion surgeries implanted him with the Red Kingstone. 
===Creation King Selection===
Much like in the original series, the Kingstones are also used in the process of selecting a new Creation King at the end of the current Creation King's lifespan, in which the candidate places the two fragments together before it as they are changed into their Kaijin Form if they have not done so already. If the host is worthy, they will recieve brief visions of the Kaijins' history from the stones. The kaijin will be then turned into the next Creation King, having assimilated the still-living remains of their predecessor unless they have a strong enough will to reject it, as Aoi Izumi was able to. If not, the Creation King will simply just use its psionics to throw them aside, knocking the Kingstone's halves out of their grasp.
=== Century King Empowerment ===
When reinserted into the energy reactors of the Century King Drivers, the Kingstone will increase the output of Vital Photons being emitted from the Driver's Energy Reactor, allowing the Century Kings to infuse Vital Photons into their arms/legs for powerful finishers.
==History==
After the rise of the Creation King, Kouzou Minami and Soichiro Akizuki had cultivated the Kingstones and waited for the next solar eclipse to repeat the same conditions which transformed the Creation King. The stones were implanted into their own sons, Kotaro Minami and Nobuhiko Akizuki, in hopes that the two would work together to either destroy the Creation King or create a new one.
By 1972, both Kotaro and Nobuhiko, now young men, have taken the Kingstones out of their bodies for the purpose of of being able to select a successor to the Creation King as soon as possible. With the rise of the Gorgom Party in cooperation with the Japanese Prime Minister, Yukari Shinjo had formulated a plan to use the Kingstones to kill the Creation King and prevent any more Kaijins from being born. After being entrusted to the two Kingstones by Kotaro and Nobuhiko, Yukari is later killed by Bilgenia for her treason against the Creation King. Oliver Johnson, having discovered that Yukari was in possession of the Kingstones, seized the Kingstones for the next three decades. 
By 2002, Oliver hid one of the Kingstones in the mouth of his own son, Nick. He also called Hideo Kawamoto and his wife Rino Kawamoto to the church as they were both leading scientists in the study of Kaijin, and entrusted the second Kingstone to them. After the Kawamoto couple were later forced to leave Japan on a "business trip", they secretly gave the other Kingstone to their daughter Aoi Izumi. Around this time, Shinichi Donami had just arisen to power as the new Prime Minister and attacked Oliver Johnson for the locations of the Kingstones, though he was only able to retrieve the one in Nick's month. 
By 2022, Aoi had continued to wear the Kingstones around her neck as a pendent, though she wouldn't be privy of the pendent's true nature until she had met a now middle-aged Kotaro, who revealed to her why the Kaijin had begun targeting her. Eventually the Gorgom Party had seized possession of Aoi's Kingstone, and Donami revealed to them the Kingstone in his possession. After Darom, Bishim, and a kidnapped Aoi failed to "become" the Creation King on Donami's orders, Aoi managed to escape with both Kingstones.
==Notes==
*The Kingstones depicted in Black Sun have differences from the Kingstones in the original series:
**Their fantastic nature is left ambiguous as their origins are not entirely explained other than having a connection with the Creation King.
**Kotaro and Nobuhiko's Kingstones are not individually named in-series, though their titles "Sun" and "Moon" are given to their Rider designations instead. 
**The Stones are not required to power the Drivers, as Kotaro and Nobuhiko were still capable of transforming even after giving their Kingstones to Yukari Shinjo. However, touching one after a long period of non-exposure to it will cause both Kotaro and Nobuhiko to transform regardless of where they are.
== Navigation ==
Category:Arsenal (Black Sun)
Category:Items