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Issei makes a startling request to his origami obsessed best friend, Kento, asking if he would "please take care of his prostate."
Japan Men's Sports College, also known as J-Balls, includes an organization that aims to cultivate healthy sperm to fight declining birth rates. Each year, it selects the top student and awards him the prestigious title of Best Balls. The recipient becomes the most desired donor at sperm banks and is given a solid gold ball worth millions. Kiminari hopes to be this year's Best Balls, so when Akira, who failed the J-Balls entrance exam, asks him out, Kiminari agrees on the condition that Akira help strengthen his reproductive ability. Both are insatiable and can't keep their hands off each other. But, they've enjoyed themselves so much that Kiminari's sperm count has gone down! Is love dangerous for a Best Balls candidate?
On his 20th birthday, Sawamura Eita is kissed by his best friend. The were both a bit drunk at the time, so Eita is content to believe it was all a dream. But was it?
At the beginning of his last year in college, Shizuka meets Izumi, his new professor's assistant. Shizuka is drawn to Izumi's black hair, pale skin... and seemingly lonely expression. However, he realizes one day that it's the professor who is the target of Izumi's gaze. "...The person I like has someone they like. And that someone has a wife."
Shoma Ikehata is a guy in his 20s who, quite frankly, still looks like a little boy. In fact, he looks so young that Yohei Kawadono falls head over heels for him because of how he looks. Shoma's creeped out at first, but Yohei opens him up by watching the kinds of B-movies most people don't like with him. One day, Yohei saves Shoma from a drunk guy at a late show, and as a reward, he asks Shoma for some extra loving...!!
The college Romance Club, also known as the "Cruising Club", is about to be shut down. The gorgeous young club leader Hibiya is having trouble finding club members who are as attractive as he is. Just then, freshman Togo Mukai visits the seedy clubroom. He's plain-looking, but just hot enough for Hibiya. Planning to seduce him with his alluring beauty, Hibiya tries to get closer to Togo, but somehow ends up getting rejected. "...You led me on for a while, and now I've got a hard on." Hibiya strips down right before Togo's eyes and starts getting himself off with sex toys, but the guy won't make a move! The truth is that Togo's misunderstood the club's real purpose and he's actually straight! Hibiya wants to keep the club going so that he can get to see his love, the recent-graduate Kiryu...
With both looks and brains, Keiichi Toma leads a fine life as a clinical psychologist. But he had a secret that he can't admit to others... He can't bring himself to love another human being, and his life-sized doll is the only object of his affection. One day, Keiichi starts to teach a course at a university where he meets Tamaki, a beautiful male student who is referred to as "the Mannequin Prince". Super-aloof and expressionless, Tamaki may not get along with his peers, but he's Toma's ideal! Keiichi's at the age when most people get married, and through Tamaki, he decides to make an effort to overcome his lack of interest in people...
Currently single, Arata Mikeya's days are spent busily working as a tech support officer at a college. His job mainly involves fixing the school computers, and when he finishes work, he goes straight home to sleep. Rinse and repeat the same routine. However, after Arata receives a confession of love, his daily routine breaks down. Lacking self-confidence, he doubts the sincerity of that love, but...
Niijima believes that physical and emotional connections are nothing but ways to kill time. One day, as he's about to do it with some random guy on the college campus, he's found by the teacher whose lecture Niijima tends to skip. Niijima, who's confident in himself, makes use of that fact to get close to the man in order to get course credits, but... the man pays no attention to Niijima's seduction! With his pride broken, Niijima attempts to win over the man by getting him drunk...
Sayama Ten, common student, is one day accosted in class by a serious ikemen, Hachimaki Waka. His request is a bolt from the blue: Hachimaki wants to have sex with him! But they have never spoken to each other before and even if Sayama is gay, he is not the type to sleep with the first person who comes along. Furthermore, Sayama is a “cat” and Hachimaki is nothing like the man of his dreams. Yet, the very next day, even though Sayama rejected Hachimaki, the latter comes with a peculiar strategy: inundating him with strange gifts such as… fish-flavoured snacks? Is Hachimaki really taking him for a cat!?