Forbidden Alliances

What if there was a universe where Harry Potter has got tired of being the hero, of being a nice a person, where he just wants to get revenge, to get rid of all his problems, to make people fear him? He wants to take over the world, to become the same monster that Voldemort is-if not a worse one.

But in order to do that he can't just kill Voldemort, he needs to kill his heirs because there is no way they would let him take the death eaters when their father dies.

He has it all planned out, their death, Voldemort's death, even Dumbledore's death, but as it seems, things don't always go as planned because Voldemort's youngest daughter finds out about those plans of his, so she makes a deal with him, an alliance in which she'll help him kill her father on the condition that he spares her, her brothers and her cousin.

Harry agrees, secretely planning to betray her, but he can't help but start to fall for her as the time goes by.

But is his love for her truly stronger than his need for revenge? Will he actually keep his part of the deal because of his feelings for her? Or will his anger get the best of him eventually, causing him to betray her trust and lose her forever?

TRIGGER WARNINGS:
POSSIBLE SMUT(I haven't decided yet)
OVERDOSING ON PILLS
MENTIONS OF BLOOD
MENTIONS OF ABUSE
MURDER
TORTURE
ANGST

!!Updates every Monday!!