Tajima doesn't have enough money to pay his rent. Lucky for him, the fine print in the contract states that he can pay his busty landlady with a currency he has lots of: semen. Time to deposit your payment, Tajima!
A succubus waits for her little brother Nao, who she loves more than anything in this world, to return from work on her birthday, only to find out he’s got a girlfriend. Unable to forgive Nao for betraying her, she uses her powers to transform him into a younger version of himself and commences her “punishment”!
Even though our protagonist has managed to land a promotion, his job has only gotten more difficult. He's now worked to the bone and feels too tired to do anything at all. However, a chance encounter with an inexperienced, awkward girl working at a brothel leaves him with an opportunity to recharge and refresh. The girl offers him service beyond imagination for what seems to be a cheap price, but there's something strange about her...
As if Mitsuru already had enough to deal with, now he's faced with a half-demon, half-vampire who's hellbent on securing his soul if only for her to monopolize her beloved Puellaria all to herself. And so she goes on to sealing him in a dream world where she manifests as a sultry temptress that makes him cum with even the slightest provocation. Will Mitsuru ever be able to exit this sex-filled dream world in one piece?