Rin itoshi - Rinsagi

Rin Itoshi is a vampire alpha who fell in love at first sight with a human, Yoichi Isagi, a very handsome and kind omega. Rin's love for him was immense; the problem was that they couldn't be together because Rin would break one of the rules—and that rule is "not to fall in love with a human." His older brother, Sae, also fell in love with a human, but he became a vampire, and now they are together; that boy is Shidou. So Rin confessed his love to Isagi, and Isagi felt the same way about Rin, so they became a couple hidden from others. If they wanted to be together, Isagi would have to become a vampire.

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