On the very same evening that his little sister and best friend are married, Haruka is assaulted by a mysterious, scarred man who swears vengeance for a past wrong that he claims to have suffered thaks to Haruka’s family! Can Haruka nail down the stranger’s identity in time to save his own skin… or will his hunt for answers send him spiraling into a vortex of pain and suffering? The Spiral of Sand spins a twisted tale of unrequited love, revenge-fueled desire and a near-fatal attraction that knows no bounds! Forensics specialist Haruka has a brand-new co-worker who seems eerily familiar… right down to the jagged scar on his hand! Can he reach back to both the distant past and his memory of the surprise attack in order to figure out why a stranger has chosen him as the focus of his rage… and lust?