The second installment of the ultimate collaboration between the super popular manga [Karamizakari] and the two exclusives [Rikka Ono& Nozomi Ishihara]! The desires of the four girls who had their first sexual experience in the previous work were accelerating, but with summer vacation upon him, Takanari was forced to spend all his time studying for his exams. Meanwhile, Takashi, who was absent from club activities, was spending all his spare time having sex with Iida and Niyama. Every day, Takashi sent him sex reports and post-sex images. He studied and studied while feeling frustrated...but was it really necessary to throw away his youth and lose his summer vacation as a student that would never come back in order to focus on his studies? The doubts that bubbled up in Takanari's Kokoro grew bigger day by day, and before he knew it, he was at Takashi's house. When he stepped into the unlocked house, Takashi was once again indulging in sex. ...with only Iida as his partner. When Takanari notices that he has seen them in the act, Takashi says, "Since Niyama went on a family trip, Iida and I have been alone together for a while now. Iida, since you're here, let me show you!" He thrusts his fingers into Iida's crotch, making squishing sounds as he stirs her vagina. Unable to contain his excitement, Iida squirts from between her legs. The body of the one he has a crush on has been developed. As he watches the other moan with pleasure, Takanari can no longer suppress his desire. Even after the summer vacation, he still cannot overcome his sexual desire. Even as the sun goes down, Takanari continues to breathe heavily and fuck, making him look like a beast. However, the price is high, and he is ordered to stay home for skipping his studies. His youth is stolen. Even while he is refraining from going out, Takashi is having sex with those two... As they grow up, the fate of the four friends who gradually become less compatible. An orgy at a summer festival to make memories. A tragic rape incident. An abrupt end. A third woman, Takeuchi-senpai, appears before Takashi. And then Iida and Niyama have a new encounter. A summer story about four boys and girls in the turbulent transitional adolescence.