99% Succubus-Chan summary:

Being a mix between a human and a succubus, Lili is unable to drain men's energy very well, and is always ravenously hungry. Even today, her stomach is super empty. But she's also incredibly unskilled in both love and romance, so she can't find anyone from whom she can drain energy! Then right at that moment, she happens to meet a man who has the most delicious, gourmet-quality energy. Despite being a succubus, she's kind of simple minded, and finds him so delicious that she can't stop herself...