Your search for "rule book" revealed the following:
Megaman YAOI Doujinshi - Folder Return V2 (Rikkidoman x Mega Man Hornet Man x Mega Man Virus (Tentacle Monster) x Mega Man and Shadow Man x Mega Man)
$ 67.95Product details: Rikkidoman x Mega Man, Hornet Man x Mega Man, Virus (Tentacle Monster) x Mega Man and Shadow Man...
Fire Emblem Three Houses Doujinshi - ENGLISH Translated Gautier's Blessing (Felix x Sylvain)
$ 67.95Product details: Felix x SylvainByleth can't stop using his power! Each time he alters time, the world gets a little...
Tales of the Abyss BL Doujinshi Remix - Chaos Green Only (Sync x Ion / Synch x Ion)
$ 67.95Product details: Sync x Ion / Synch x IonThis wonderful remix contains several of mashiro.y's works, including: Sweet rhapsody, Kitty...
One Piece YAOI Doujinshi - Triangle (Doflamingo x Law / Donquixote Doflamingo x Trafalgar Law Corazon x Law and Doflamingo and Corazon x Law)
$ 33.95Product details: Doflamingo x Law / Donquixote Doflamingo x Trafalgar Law, Corazon x Law and Doflamingo and Corazon x LawThis...
BlazBlue Doujinshi - Distortion Intersection (Ragna the Bloodedge x Hazama Honoka / Ragna x Hazama and Terumi)
$ 33.95Product details: Ragna the Bloodedge x Hazama Honoka / Ragna x Hazama and TerumiWill Hazama agree to be Terumi's weapon,...
One Piece Doujinshi - AWAKE - D - (Doflamingo x Law / Donquixote Doflamingo x Trafalgar Law)
$ 33.95Product details: Doflamingo x Law / Donquixote Doflamingo x Trafalgar LawItem Title: AWAKE - D -Produced by: 69DOLLY (mizutama)Format: Doujinshi...
Hetalia Axis Powers YAOI Doujinshi - XXX (Greece x Turkey)
$ 33.95Product details: Greece x TurkeyTurnabout is fair play! This is a sexy book!Item Title: XXXProduced by: count25! (Aisumai)Format: Doujinshi Language:...
Magi: The Labyrinth of Magic YAOI Doujinshi - How Do You Taste? (Sinbad x Jafar)
$ 20.95Product details: Sinbad x JafarItem Title: How Do You Taste?Produced by: kinkatou (haru)Format: Doujinshi Language: Japanese Page Count: 24 Size:...
Ranma 1/2 Doujinshi - Ranma Simulation (Ranma Akane Mousse and Ryoga)
$ 20.95Product details: Ranma, Akane, Mousse and RyogaItem Title: Ranma SimulationProduced by: Luke1008 (Setana Kamiura)Format: Doujinshi Language: Japanese Page Count: 20...
JoJo's Bizarre Adventure Doujinshi - Unconditional Happiness Theory (Joseph x Suzi Q and Caesar)
$ 20.95Product details: Joseph x Suzi Q and CaesarItem Title: Unconditional Happiness TheoryProduced by: Fuzi (Nora)Format: Doujinshi Language: Japanese Page Count:...
