Declan: Heart of a Tiger by J.R. Loveless

Will the truth bring them together, or tear them apart?
When a battered shifter rescued from a lifetime of trauma ends up as the top tiger’s mate, Declan is faced with possible war. With his nephew safe, and a new mate to secure, he should be focused on them. Instead he’s facing a challenge that will end up changing everything, or his death.
Sean grew up in a cage never dreaming of freedom, until the chance to save another brings him into the light. Now he’s met a man he can’t imagine living without. Only they both face a trial neither of them may survive. Can love give them the strength to win?
Content advisory warning: off page non-con, violence, child abuse, and PTSD.