At the moment of graduation, the White Tiger Beastman who had stayed by my side for eighteen years cast me aside in public. Mocked for my so-called D-rank ability, I was the only one who found an unexpected bond with the Black Serpent Beastman—dismissed by everyone as a useless experimental subject. But when the poisonous tide arrived, he consumed deadly poison by the countless and rose into a serpent so enormous it darkened the sky. That was when I discovered the truth: my ability was never D-rank at all.
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