My Succubus Girlfriends

[Warning this novel contains a lot of explicit sex scenes and harem elements] Cole a normal college student was in his room just chilling until his tomboy childhood friend barged in. She thought it would be a good idea to summon a succubus to solve their problems. Yeah a SUCCUBUS Those hot demon women from hell. So he went along with her just for the hell of it. At least that way his tomboy friend would stop bothering him when it fails. But he didn't expect it to ACTUALLY WORK!