Kurin

Kurin is the friendship ship between Kuro and Rin Okumura from the Blue Exorcist fandom.

Canon
Kuro is the demon familiar of Rin's late guardian, Shiro Fujimoto, who died to protect Rin from Satan, and because Shiro chose to keep Rin from the world of demons and exorcists, Rin was never told of Kuro's existence or the strong connection he too shared with Shiro, until the day Kuro became aware of Shiro's passing.

The moment Kuro over heard the guards talking about his master's death he refused to believe it and began to go on a rampage on the bridge, Rin convinces Yukio to join him when he was called onto the scene to assist the other exorcists. Through his demonic blood Rin is able to hear Kuro's voice, but didn't say anything about it until after Yukio and another exorcist explains Kuro's connection to Shiro and how the demon cat began his familiar.

Fanon
Fans love the bond and friendship that Rin shares with Kuro, which might be why there are some fans who compare them with Natus and Happy from Fairy Tail.

In a few fanfics and fanart, Rin has known Kuro since he was little, back when Rin wasn't aware of his demon heritage or the demonic world Kuro is from or have Rin already being aware of the existence of Demons, when Shiro brings Kuro to the monastery to have the demon cat serve as Rin's guardian and friend. There have even been a few fanart of the two that has Kuro as his humanoid form that was featured in one of the manga's bonuses. Along with there being fanart that features Rin has a black cat or has him wearing a cat styled hoodie that is based on Kuro.

Fandom
FAN FICTION
 * Kuro/Rin on FanFiction.net
 * Kuro/Rin on FanFiction.net

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