The Ribika are a race of cats possessing ears and tails. Their bodies are lithe and nimble, and they live in the land of Shisa. However, a curse called the "Void" is spreading through the forests... One of the Ribika, Konoe, lives in a small village called Karou. One morning, he wakes up to find that his ears and tail have turned black. There is also a symbol on his body; the mark of the curse. Konoe embarks on a journey through the forest to find the truth.

Taken from Wikipedia and Dangerous Pleasure:
After being devastated in the third World War (known as The Third Division), Japan was divided in two. Several years after the end of the war, a crime organization called Vischio has taken control of the destroyed city of Toshima (formerly Tokyo, Japan's capital city), where they are holding a battle game known as "Igura". The main character, a young man named Akira, is falsely accused of a crime. Once arrested, a mysterious woman appears before him, offering him freedom if he agrees to participate in Igura and defeat Igura's strongest man: the king, or "Il-re". The story follows Akira's life in the harsh, lawless Toshima as he fights both to survive and to unravel the mysteries developing around him.

Sakiyama Youji has been absent for around year due to health problems. Upon returning to high school, changes started to occur to him. For instance, Shironuma Tetsuo, a guy who Youji rarely speaks to starts approaching him constantly, and when asked why, never gave an answer. At the same moment, Okinaga Zenya, appears right in front of his eyes, saying it's all his fault. Making matters worse, Youji starts having strange pains and nightmares. Will he be able to distinguish these feelings?

Based on the BL game "sweet pool" by Nitro+CHiRAL, illustrated by Mayu Kurumazaki.

Serial comic based on Nitro+CHiRAL's post-apocalyptic Japan BL game, 'Togainu no Chi'. This version cleanly (no overt BL) follows the Keisuke storyline.

Notes: Chapters 1-2 were published in Magazine ZERO by Biblos in 2005 under the name Tomoe Sato. Vol.1 was published by ASCII Media Works in July 2008 as Yamamoto Kana.

Based off Nitro+CHiRAL's “Brain Crash Story” game of the same name. The story takes place many years in the future where the game "Rhyme", a virtual fighting game, is incredibly popular and people posses "All Mates", convenient AI computers. Aoba leads an ordinary life, working at a junk shop and living with his grandmother on the Island of Midori Jima. Unlike his friends, he doesn't participate in Rhyme, nor does he belong in a gang. However, when rumors of people disappearing spread, Aoba finds himself needing to unravel the mysteries behind the island in order to protect his everyday life.