2 Books Found

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"A girl's parents were adventurers and her dad is kidnapped. The parents had discovered an island before she was born where there is a genetically superior human civilization that lives longer and is stronger, etc. The antagonist(s) wear masks and the main one is a cop. She falls in love with a chimera, a man who has DNA from both the regular human race and this advanced race. At the end, they travel to the island. Most of the setting takes place at the male love interests mansion in the woods. It has a pond in the back. His parents died there."