This is world of Bloodlines in which being born in the wrong family can crush all your hopes, aspirations and dreams.
The Zerst Family had fallen from grace, left with only a pair of twins as the final descendants.
This is the story of the twins who restore the former glory of their Family, while overcoming all odds.
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The world is semi modern at the start, and technology is progressing as the timeline is moving forward. But the relevance of technology is almost 0 to the important parts of the story and is only there for more convenient storytelling.