Rin Okumura (奥村燐 Okumura Rin) is the son of Satan and the elder, fraternal twin brother of Yukio Okumura. Studying as an Exwire at True Cross Academy, Rin desires to earn a Knight Meister and defeat his biological father.
Rin has messy, jet-black hair (dark blue in the anime) that sweeps down in his pale skin and intense blue eyes. Since using Kurikara for the first time, Rin began exhibiting a number of physical traits that hint at his demonic nature in his human form such as prominent canine teeth, slightly pointed ears, and a long, black, fur-tufted tail.
In his Demon form, Rin gains two horn-like blue flames floating above his head, long elf-like ears, and red slitted pupils, while his irises remain a deep blue. The blue flames also blaze around other places of his body, mostly at the tip of his tail and on his shoulders, as well as his sword.
Before going to the True Cross Academy, Rin's wardrobe consisted of a simple blue hoodie over a pink T-shirt and a pair of black jeans with chains on the side, giving the impression of a rebellious nature. He was also seen wearing a white j...