If you're looking for manga similar to Sou: Mr. Fixer, you might like these titles.
Years ago, a kidnapping incident left a pair of victims with lasting psychological scars: Maa-chan is prone to violent mood swings, while Mii-kun's pathological lying shrouds his life in mystery. Now, when the news begins airing stories of kidnappings and serial murderers, Mii-kun moves into Maa-chan's house, in an effort to protect this girl who he has been through so much with. But can he save her from herself?
Follows an ugly boy who meets a mysterious girl named Beniko. The pure boy is tempted by the woman, and begins to walk a path of evil.
Queen Ruriko is the owner and queen of Shangri-la, a high class bondage club. Customers with twisted love and various personalities gather there...
Did this happen by chance, or was it inevitable? Brought together by an unfortunate fate, a boy and girl meet. This became the crux that, in the near future, could lead the world into an unprecedented state of affairs. But for now, mankind comes into contact... with the "forbidden".
Satoru spends his days listlessly in a factory town. The old man Segawa, a former Yakuza, lives in the room next to his cheap apartment. One day, Segawa tells Satoru, "I'll give you 5 million yen to put me out of my misery." Satoru hesitates, and Segawa sees through to the madness eating away inside him and begins to have a change of heart, and yet...!? A story of the filth of society and the dark path that Satoru takes -- on the edge of sanity -- with a gun and 5 million yen.
"There are too many unnecessary people" - A story of destruction dedicated to a certain person who thought such. 25 years old, no money, no job, no girlfriend. Kurokawa, a man absorbed with an anime called "Meromero Melodies" and on the fast track to nowhere in life, grabs hold of a certain ability, "BANG".
Koutaro Kudo was known as the "Streets' Strongest". Once, 13 thugs, thirsty for revenge, kidnapped his younger sister Hinami. Kotaro beat everyone, and on the same night, he was arrested on suspicion of murder, as each of them was later found dead. He is then forcefully enrolled to a certain school, in which all students must meet "a special criteria" to enter...