After being dumped by his long time boyfriend, Akihisa was drowning in his sorrow in a bar where he met Shizuru and they enjoyed drinking together that night. However, when Akihisa woke up, he was tied up and could not remember the previous night. Shizuru told him that this is his hobby and when they were going to do it, Akhisa fell asleep.
Misumi Kyouya (M) is a famous model with a 'super sadist image' who was dumped by his manager Yuuji (sadist) and broke his little naive/innocent heart. 5 years passed and Yuuji is now the manager of a popular idol group Tokyo delta. Yuuji met Misumi again at a fund raiser but Mitsumi changed, his personality turned cold just like his fake persona.
Hanada is use to being in a strict environment from elementary until university but he was taken back by how relaxed his first job and sempai, Chouno, is. Hanada got wasted at his welcoming party and Chouna took care of hiim.
Mizushima was forced to go to a S&M brothel with his coworkers where he met Kazuma who works there. Mizushima broke up with his girlfriend who was into S&M sex but he was in denial of being a M until he met Kazuma, who is a S.
Spoiled rich brat gets all his hell when his father hires an extraordinary (strict and undercover masochist) secretary.
SM Gokko