In the 4th installment of the Incubus series, new male actors will appear for the first time! [Wakashishi Pharos] = Yuuki Nakamasa, a young actor of note. He is one of the young incubus who longs for the day when he will be recognized as a full-fledged incubus, and every day he finds women who are bothering him and challenges them to his advantage. He is fearless and takes on challenges with great confidence. When I get too carried away, I get a little violent and violent... He is one of Alto's (Ken Matsumoto) naughty friends. In the Incubus world, they belong to the "bad blood" class and are considered traitors. The next new face, however, is Toru Ozawa, a legendary veteran actor [Kurofudo Ozawa]. A senior incubus who is one of the goals of a young incubus. Although he exudes the calm and veteran atmosphere, his skill is still at the top. He is also respected for instructing young people in sexual techniques. In the Incubus world, he is in the ``Assistant Elder'' class, and is an important figure who also serves as an Inquisitor who hunts down ``Bad Blood.'' And the person who will take your place is Akari Niimura. Every day, I am busy with work and have no time to take a breather. It's a lonely daily life without any moisture. Today too, nothing happens and it passes. However, one day, an incubus finally came to visit you! Yuuki: ``Oh... wow, look at the prey that's full of desire◆ It's just right, this person won't complain, right? Hey, Mr. Ozawa.'' Ozawa: ``Are you really planning to have sex with me again?'' ?You won't regret it, either. I'll use this person as your partner tonight.'' Yuuki: ``Alright then, let's get started right away... Hey, onee-san, wake up?'' ``Hmm, mm. .....? Eh, what? Where is this?'' Yuuki: ``I'm sorry, my sister seemed to want me to cum so much that I just intruded into her dream.'' ``Eh? Inside...me?" Yuuki: "I want to use my older sister's body to compete with my seniors." "A contest...? With my body...?" Ozawa: "Yes, which one will make you feel better? Can you let me...?”