This is the debut work for Kaeru Soft. Takashi is your typical guy who loves ero, but he’s quite negative and unpopular. In a bid to be popular and get to have lots of sex, he performed a ritual to summon a succubus. However, something went wrong during the summoning and his classmates Rumi and Shino were inflicted with an ecchi curse and the summoned Nemu could not use her powers. Will he be able to fully enjoy his newfound life of perversion in the month before Nemu has to go back?