To love is to have a weakness. In a thousand years Niklaus Mikelson has never let anyone who was not become a weakness but what happens when he falls in love. The one he falls in love with is a powerhouse. How will he keep up with the one who has the power and charm to lead him by his nose. This is the story of the Original Hybrid and the strongest immortal to ever walk the Earth. Niklaus Mikelson x Female Harry Potter.