Inaka de Sex ni Oboreta Natsuyasumi: Otona ni Natta Osananajimi to…

"Ah, not both of them at the same time!" When I thrust into her, she can't stop cumming. Summer vacation. After a long time, I went back to my hometown and had a drinking party with my friends. I was tired and fell asleep, but when I woke up, my childhood friend, Kairi, who was drunk, was sitting on top of me...!? Her tongue was entwined with mine, and we shared a passionate kiss. I was trying to control myself, but she asked me, "Are you bad at it?" Her warm, sweaty body temperature, and soft breasts... I was reunited with my childhood friend, and we did it again and again...!?
(Source: Eromangajima, translated)
Note: Released in 36 episodes and sold as 12 chapters.