The plot is about the mc ( i think he’s a snake or like a supernatural being). The mc always donates blood to the one that ml likes bcs that person is very sick and that person needed the mc’s blood to recover. The reason why mc donates blood to that person is because mc is in love with the ml. Im sorry thats all i could remember about the novel but if u know what its called, pls tell me. Thank you in advance love^^