Annoyed by everything and lacking any interest in love whatsoever, manga artist Rui gets an unexpected visit from a built, scary-looking yakuza. After carelessly becoming the guarantor for her friend's loan, she is told to settle his debt of tens of thousands of dollars... "I'll wait for payment. That is, if you let me have sex with you." And just like that, she's pulled into it. "But, I'm a virgin... Am I gonna be okay?" Just as she thinks she's going to be made to suffer, she gets treated kindly and gently, making her first sensual experience all the more confusing...

Hotaru Shina is an office worker with a powerful libido and imagination to boot. She spends her nights alone, pleasuring herself with adult toys. One day, while she's working overtime, she realizes she brought one of her toys to the office! To make matters even worse, Ryo, the top sales rep and someone she looks up to, walks in on her holding it! She thinks he'll be repulsed, but the usually sweet Ryo reveals his own dirty appetite. He pounds her hard with something way bigger than she's used to. She'll never be able to go back to satisfying herself again...!!!
They've got great physical chemistry!! This is a secret office romance about two people who were made for each other.

Aoi is a freelance writer who has always been too busy to learn how to take care of himself. To solve this problem he hired a housekeeper, Touya. They hit it off and now they're good friends. However, their relationship is a source of stress for Aoi, who is worried that Touya will see him differently if he reveals his true feelings. Another problem for Aoi is that his gender switches the moment he drinks alcohol! Could this be his secret weapon for winning Touya's heart? Bewildered by his own insatiable body, Aoi can't keep his feelings at bay!

Tatsuji was Mugi's grumpy and slightly intimidating neighbor. Her kitty cat, Nadia, keeps running away to go next door...! Tatsuji has to admit he doesn't mind having an excuse to see Mugi everyday and when she finds out he's an animal lover who works at a cat cafe, she knows he can't be all that bad. The closer they get, the less he can hold back... Will they end up crossing that line!?

"Not yet... I still want more." Desperate like a beast, he sets my body on fire with his tongue and fingers.

Mizuki Sarashina's a new employee at a company and her mentor's a guy rumored to be "cool and handsome"... No, he's named Hyogo Kishima and he has the nickname of "newbie killer"...!!

Mizuki has a strong fighting spirit and manages to keep up with the workload he gives her. Then, one day, Mizuki finds a piece of chocolate on her desk and doesn't know where it came from...

From the one-off story "Dangerous Pranking During a Secret Office Romance" comes the return of the ever-fighting couple! This is the start of a new series where we find out how Mizuki and Hyogo first met!