"I'll… help you finish." I want to see more and more of him being turned on. He's a "daddy," yet he moans out loud, shuddering in ecstasy…

A mild-mannered gentleman, good at his job, and reliable; Naohito's been wearing his mask of "perfection" for so long it's become as easy as breathing. That is, until he meets HIM. At the behest of a childhood friend, Naohito grudgingly attends a singles party for twenty- and thirty-somethings. With zero interest in mingling with the crowd, Naohito sits off on his own - and meets a much younger man, Tohru Akasaka, who clings to him like a puppy. Naohito's barely able to cope with Tohru's youthful energy, and they go their separate ways... but in a twist of fate, end up meeting again. Naohito's life is flipped upside down by his companion. Will he give into this young man and let his mask drop!? Find out in this heart-pounding tale of two lovers as they struggle to overcome their age gap and the trials of living under the same roof.

"Wait...is that...breast milk?!" Seduced by milk overflowing from a strong, masculine chest, the crowded train became full of molesting! As someone grips his ass from behind, his subordinate suddenly latches onto his nipples and starts drinking! What the hell is going on?
It turns out chief Suzuki has caught a strange new illness called "Atypical Ectohormone ππ Syndrome" also known as Pai-Pai Syndrome. When a man contracts this illness, he starts releasing a milk-like pheromone from his nipples, which puts other men in heat! To make matters worse, the only way to cure it is Sex? Overcome by desire for his milk, lustful subordinate Takumi relentlessly hounds his nipples and body... The horny milk just keeps on flowing!!

"Just remember. This is your good spot." Kozue is a male virgin who loves sex. He can't control his desire to be fucked by a man, so he tries to apply for a part-time job as a male prostitute, but there is no spot for bottom. "I'm cute and all ready!" When he said that to the owner, the number one top Yosuke said that he would take care of him...!? A sweet kiss fell on him all of a sudden and made him erect. Yosuke teased him with his long fingers and made him cum. "Aren't you sensitive?"

"If you're the one to put inside... Then I'm okay with it." Sakai, a gay man who used to be a teacher, saves Ao, a handsome college student, from getting entangled with a stranger. Ao asks him to return the favor and they end up having a drink at a bar. While Ao shows his youthfulness, Sakai starts thinking about being in bed with him. And when he starts his imagination, Ao invites him out...! Sakai takes the lead by saying "Sorry it's an old man's asshole, but you can fuck it hard as hard as you want." However, when they start having sex, Ao pounds Sakai's prostate hard and takes control and...!?

"Right there, touch me more..." Haru is an idol who unless he is given pleasure by being touched by a stranger grows frustrated and is unable to function properly in his daily life. One day while he is enjoying some train-groper play, a younger man he's never met before interrupts at the very worst time!! He tells the man he needs to make amends for cutting off the pleasure he was feeling. Under the young man's inexperienced hands, he begins to feel oh so good......!! He wants the young man to make him feel even more pleasure and their encounters soon escalate!

"Shall I...help you get off?" Mr. Ameyama is a train station employee whose secret pleasure is to check the ticket of Mr. Hakaze, a "delightful prince" who comes to the station every day. His heart raced plenty enough just from getting to talk to him a little... One day, after becoming his drinking buddy, he ended up going over to his house! As usual, Mr. Hakaze was dazzling, handsome, and smelled great... so, of all things, Mr. Ameyama got an erection. Noticing that, Mr. Hakaze took him into his arms from behind and started stroking it with his fingers...!?

Okano, who has no friends and is in the throes of his self-conscious teenager phase, spends his days doing experiments in his own personal science club. He was content with his school life until Shouta Tsuchiya, a flirty moron, appears on the scene one day. "Wow, your experiments are so cool, senpai!☆" Although they're complete opposites in every way, for some reason, Shouta takes a liking to Okano. And as he's pushed around by Shouta after he strong-arms his way into the science club, Okano begins to develop feelings he's never felt before...! Dumb puppy-dog junior x loner senior... Youth, sweat, and tears chemically react in this explosive love comedy!