There's something in the water. Its got teeth. It wants to make a deal.

Juni Hatayama's life is unraveling-drowning in debt, hunted by loan sharks, and watching his marriage slip away. When his estranged father dies, Juni returns to his isolated hometown on the rugged coast of Northern Japan to settle the estate. But in the inheritance, he discovers something far more valuable, and far more terrifying.

His family's wealth was never built on luck-it was forged in a dark, ancient pact with a force lurking beneath the waves. An entity that grants power, prosperity, and even salvation... at a terrible cost.

As Juni's connection to the abyss deepens, he is faced with an impossible choice: embrace the horrifying legacy of his bloodline or risk losing everything-and everyone-he loves.

Dive in... if you dare. The Black Sun series can be read in any order.