BL - BDSM

After Private Ronald is caught masturbating to a photo Captain Ashford, Ronald's strict, but handsome military instructor, by Ashford himself, Ronald is shocked when Ashford's punishment turns out to be BDSM. However, Ashford tells Ronald, if Ronald's able to pin him down he can have his way with Ashford, and Ronald makes it his mission to lose his virginity to Ashford.
Includes story of a salaryman blackmailed into living with his subordinate, who's liked him since high school

Stories of the employees at Hoshi no Yakata, an S&M club

After Katou meets Takuma at a bar, he wakes up tied to a bed. Unable to forget that night, he looks for Takuma again.

Suzume is a total masochist and a bottom, who prefers no string attached relationships. His childhood friend and neighbor, high schooler Momo, is aware of his lifestyle, but still has a crush on Susuzme, a fact Suzume is aware of, but chooses to ignore. When Momo has enough of Suzume's playing around, he ask Suzume to make him his boyfriend and Suzume responds that they can try going out once.

While drinking at a gay bar with his friend after being dumped, Akihisa meets Shizuru, who he's mildly interested in. When he wakes up the next day, Akihisa is restrained in Shizuru's bathroom with no memory how what happened. However, Shizuru informs Akihisa that he had agreed to the situation and after some talking Akihisa remembers and Akihisa give into the rough play. When they're done, Shizuru asks Akihisa to be his lover.

After an S&M show, Fumitaka, a hardcore masochist, approaches Jun, the queen of the show, with the hopes of having sex. Jun agrees, assuming it would be a one night stand. Jun reveals, despite his work at the club, he isn't really a sadist and Fumitaka is okay with that, but Jun shows a different side once they get started. A side that Jun hates. However, Fumitaka isn't satisfied with having him for just one night.

Ch. 2: Tsundere nurse Mako is harassed by sadist doctor Nagai
Ch. 3: Kaoru, the only male servant of the manor, desires to be punished by his master
Ch. 6: When Arai agrees to going out with both Miyashita and Tozuka, they punish him

Ch. 6: A shopkeeper uses sadistic methods to punish a shoplifter, an animal abuser, and a burglar

Ch. 1-4: After Hiroki is rejected by his best friend Yuuji's father, Seiji, who is into S&M, Yuuji asks Hiroki to choose him. When the two are about to have sex, Seiji interrupts their reckless S&M play. Afterwards Hiroki becomes lovers with both father and son

Pg. 149-174, 212-214: After supposedly killing his childhood friend Aikawa's dog, Takeo is forced to act as its replacement, following Aikawa's every command