Frog's manga / #Incubus(1)

okay so its omegaverse where omega are treated as baby making machine or trash so our baby has to hide in host job his senond gender, once when he was comming back from work he goes to bookstore and gets book aoubt summoning demons and poof Ai apperes - they makes conterct that he become top 1 host but in extence the has to give birth do demons child - he says hold up f no and even when they had amaizing sex he eats lollipop that prevents with 100% rate no pregnancy thes time goes by they fuck all the time, use magical power of semen and slowly falls in love domeon dies ;( but gets reborn and they stay together and have a baby boy TTUTT also there is a treesome with omega girl and rape on main character including alphas from work