Unexpected Call Of An Unwanted Mate Bond!!!

This is the story of the most powerful warlock, Alexander's. After living in this world for 1800 years, he has set himself on a mission to find his father's twin brother Arthur who cruelly killed his whole family along with his lover just to become the most powerful warlock of the world. Alexander is set on finding the mythical 18 relics of Goddess hidden in the world so he could revive his dead lover Daniel and his both elder siblings. His overly possessive elder brother Aadam who was his shield, who loved him like nothing else and always protected him from everyone and everything and his overly protective and caring, mother hen sister Aleena who cherished him so much as if he is the most precious thing in the whole world. Trying to find the secret of Arthur's death which only his parents and elder siblings knew he stumbled upon a growling mutt who was claiming to be his mate. A mate which Alexander never wanted and ran off at the sight of when he encountered one. He never believed in mates, as in the world of witches they choose their life partner themselves. The overly protective, hell possessive and crazily? Alpha of all the alphas Damian who wants nothing in the world but his mate only. Who has been waiting for his mate impatiently from the past 80 years since the moment he turned 18. Alexander tried hard to run away from this growling mutt but somehow destiny always made him stumble across the domineering alpha. Alexander was broken and Damian wanted to mend him but how will he do that when his mate isn't ready to give him a chance. Alexander had decided there's no place in his heart nor in his life for anyone else except for his dead lover Daniel whom he wants to bring back to life. No one can take his place in his heart, be it mate or not, while the mutt seems to can't keep his hands to himself. Alexander was a total spoiled brat who was in for nothing more than a one night stand while Damien wanted him all for himself. Now how will their story bloom?