Lovelia

Lovelia appears at the main character’s house in order to harvest his ”technoforce”, the power derived from a male’s lust.
　
In the demon world, she is considered to be one of the greatest beauties in 1000 years, but Lovelia is still naive, despite being a succubus. Lovelia has a strong tendency to day-dream, and the slightest comment from the main character leads her to have instant naughty fantasies.