In a world where blood is more than life-where it carries memories, connects souls, and binds destinies-Yuji is an anomaly. When the blood rain falls, others relive the whispers of their ancestors, but Yuji hears nothing. Feels nothing. Because his blood is silent. He has spent his entire life pretending, hiding the truth of what he is. But when he stumbles upon a vial of clear water-something that should not exist-everything changes. The world he thought he knew is a lie. And now, those who control the truth want him erased. As Yuji searches for answers, he crosses paths with Rin, a girl whose past is woven into the same mystery that surrounds him. But in a world ruled by blood, love is a dangerous thing-especially when the very thing that makes them different may also destroy them. Now, with shadows closing in and a secret powerful enough to shatter reality itself, Yuji must decide: Will he run? Or will he bleed for the truth?