In the alternate Victorian earth the Yama live in, secrets are tantamount. This supposedly demonic race doesn't believe in letting out emotions--much less in giving their hearts away. Assassin-guards Ciran and Hattori were bred to live by that code, until Hattori's too-moral twin is imprisoned, and Ciran falls in love with the grieving man. Though Hattori can't claim to be in love, he's never trusted anyone like he trusts Ciran. Both have illegally altered genes that heighten sexual needs, making those needs a challenge for anyone else to satisfy. Theirs would be a match made in heaven, if only Hattori's heart could stretch that extra inch toward Ciran. Katsu Shinobi isn't your typical demon princess. As tender-hearted as she is lovely, she seems an unlikely match for either of these dangerous assassins--at least until they receive orders to kill her. None of them can forget the erotic interlude they once shared . . . or give up the chance to build a lasting future, together.