My sister's Alpha, my fated mate

“Elara spent her life believing she was human... until grief uncovered the truth. She is the secret daughter of a powerful werewolf Alpha, the child of a love so forbidden her mother had to run to the human world to survive. Now alone, Elara returns to the Wave Pack, a place that was never meant to welcome her. But the pack's cold stares are nothing compared to the fire that ignites the moment she sees him. Kael. Dangerous. Dominant. Unforgiving. The Alpha whose presence makes her wolf ache with recognition. Her fated mate. There's just one cruel twist of fate... He's already claimed. Married to her sister. Every glance lingers too long. Every touch burns. The mate bond pulls tighter, tempting them to cross a line that could shatter the pack forever. And when desire turns into something deeper, something growing inside her, secrets explode, loyalties break, and the Wave Pack is pushed to the edge of war. Because in a world ruled by instinct and blood... Some mates are worth the sin.”