If you're looking for manga similar to Dogesen, you might like these titles.
Arizona State, Cameron - 1:23 P.M. While two men meet, a gunfight suddenly happens between them. One of them stays alive, then leaves. A woman breaks free from the trunk of the car she’d been left in and picks up the revolver that had been dropped and...
Araragi Riuichi is a law student. But unlike others, he is very aware of human lives and how people can toy with them. So when he sees that a man is trying to kill a kid, he decides to come in action. But although he believes it's the right thing to do, the police doesn't share his idea, and so Araragi goes off on his own to fulfill his dreams and make a better world. But then in his way... The Araragi Way.
Seeking a greater justice, a band of homeless assassins flays their human targets and delivers the tattooed skins as proof of a contract fulfilled.
The world is filled with cruel scum, ranging from petty thieves to sociopath maniacs. When a vile low-life inflicts pain and suffering on innocent victims, sometimes their anger becomes overwhelming. Whether their damage stems from romance, finance, reputation or even a death, these victims feel trapped in their own skins and lives. Those victims who can't stand it anymore call for the mysterious woman Houjou Shiori, owner of Uramiya, the "Revenge Shop". The Uramiya specializes in executing revenge schemes. The vengeance their customers request on their bitterly resented enemies could range from financially destroying them, to smearing their social reputation, to even taking their lives. As long as you pay a fair price, the Uramiya will guarantee you get the revenge you deserve.