Silver Diamond Gaiden

宮

Miya is one of the members of the Sanome Prince's Guards that's pretty close friends with Kazuhi. He is a letter otaku (loves kanji), and is good at selecting kanji for names.

Bio from Fandom, licensed CC BY-SA

鬨士

Goushi is a member of the Sanome Prince's Guards, and one of Kazuhi's closest friends. He may be younger than Kazuhi, but he is older mentally. He is a man of the world*. (T.N.: Meaning he is an experienced person, very adult-like)

Bio from Fandom, licensed CC BY-SA

主匪

沢羅貫

Rakan Sawa (沢羅貫, Sawa Rakan) is the primary protagonist of Silver Diamond. He is a 17-year old high schooler who was dragged to an alternate world, the Amato Empire, by Chigusa Senroh after discovering his abilities as a Sanome. Together with Chigusa Senroh, Narushige Shigeka, and Tohji Tohno, he travels to defeat the tyrant Prince of the Empire. It is later discovered that he is the younger twin brother to the Prince.

Bio from Fandom, licensed CC BY-SA

重華成重

Narushige Shigeka (重華成重, Shigeka Narushige) is one of the four main protagonists of Silver Diamond. He is a 21 year old man who was born within the Shigeka Clan, a family which only bore women. He was known as the Ill Omen and people blamed his birth for the Amato Empire becoming its current disastrous state. He met Rakan and Chigusa by also being dropped into Rakan's backyard garden. He is one of Rakan's main protectors, from both harm and Chigusa.

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灯野灯二

金弦金隷

His childhood name was Kinrei (金令). He was the only one that can hear the Prince's voice, so his name was changed to Kinrei (金隷), the one who serves the Prince. He used the Prince as a tool to grant his own wish. However, when the Prince chose to die rather than to become his tool, Kinrei then saw the Prince as a living person rather than as a puppet that sprouted emotions that the latter didn't have until then. He made amends with the Prince and together, they fight against Rakan's group. He abandons the world that is coming to its end and aims to become superhuman. Chigusa remarks that even though Kinrei appears to be just a human right now, the latter's composition was strange when he was younger.

Bio from Fandom, licensed CC BY-SA

虹

重華三重

皇子