The main character’s mundane daily life is turned upside down when a certain woman appears in his life.

"The creatures of the demon world known as ""succubus"" use a male''s sexual energy, his ""technoforce"" as their nourishment. One day, one such succubus known as ""Lovelia"" appears suddenly before the main character to steal the power of his lust, known as his ""technoforce"".