Mercy Written in Blood (The Veiled World #1)

For nearly a thousand years, Renji Takahara has hidden among humanity, healing the sick while carrying the weight of a forgotten bloodline.

When a massacre uncovers an ancient conspiracy buried beneath the city of Takamori, Renji is forced into an uneasy alliance with Haruki Ishida: a powerful crime boss whose loyalty to his people rivals Renji’s own.

As long-buried secrets emerge and old enemies return, the line between monster and protector begins to blur. But some truths were hidden for a reason… And some legacies are written in blood.