If you liked the Death Note manga, the Anime-Planet community thinks you'd like:
Every day after school, the quiet and introverted student Kurosawa goes into the empty girls bathroom and "relieves himself". Besides this extremely odd ritual, Kurosawa also has a thirst for justice and a judgmental attitude towards his classmates. Upon seeing the bullying of an awkward girl in his class by two of the "popular" girls, he decides to bring justice to the bullies the only way he knows how. His plan for revenge goes "just as planned" until met by an unsuspected accomplice.
Weird Combo? Defienietly. What does a 14 year old masturbation addict have to do with guy killing criminal via notebook? Well for starters Onani Master Kurosawa is (at least at the first half ) a very obvious parody of Death Note. Young Kurosawa just like our (anti)hero Light deals justice to all the annoying bullie girls by fantasising about raping them and ( a bit l8r in the series) by spreading the white juice over their clothes while they're not here.
That said you really shouldn't just treat Onani master as plain parody - it gets more meaningful than you could have anticipated from the title and description, I can even say that in terms of psychological realism it surpass Death Note by far.
Summing it up - both mangas are about a lone-wolf, who looks down on everyone around him and feels righteus enough to judge them (whether just in imagination or in harsh reality). Both deals with issues of punishing the crime that can't be punished by normal means.
It doesn't matter if the main charachter's biggest passion is writing in the notebook or fapping... everything looks better when you play epic music and look at their indentical (yes OMK is parodying DN in that) facial expressions... their goals are quite questionable... and so is their sense of justice... though it doesn't make them any less epic...
These two have one thing in common, the main character talks to himself like he is in control of the world.
Akumetsu and Death Note mainly have the same theme. The only way for this perfect world to be rid of evil is to kill off the evil. Light rids the world of evil with his notebook so only the good may survive. With this constant killing, the people begin to side with "killa". Akumetsu rids what corrupts the world and that is politicians. His "kill for a kill" method begins to persuade the town who start cheering for him. Both main characters are genius idealists and nothing can get in their way. With mass gore and the perfect world in view, these two manga are worth the read.
Very similar in plot, Akumetsu and Death Note have ambitious protagonists on a crusade to to cleanse the world by getting rid of corrupt politicians(in Akumetsu) and criminals(in Death Note) by often resorting to ruthless and cold blooded means.
While Death Note is considerably less gory, it is much more psychological than Akumetsu. But in its defense, Akumetsu gives a fair amount of comic relief as compared to the other.
The concept of death is a key factor in both Blood + and Death Note, death is an inevitable thing for everyone and both these series explore the good and evil sides about it. The outcome is likely to be the same yet the perspectives are entirely different.
In a land overrun by yoma - monsters that feed upon human innards and take on the appearance and memories of their victims - humans are little more than cattle awaiting slaughter. The only opposition to the yoma is The Organization, a group led by a council of mysterious men who send out their all-female warriors (known as claymores) to do their bidding. However, The Organization is not charitable; a town must pay an exorbitant fee for their services. Likewise, many of the claymores care little for those who they protect. Clare, the lowest ranked claymore, lives only so that she may one day avenge her mentor.
Although Death Note seems mildly unrelated to Claymore, both encompass very dark themes and twisted views of death. The characters of Light (Death Note) and Claire (Claymore) have a desire to achieve their original goal, which almost blinds them to the fact of everything else. They are simply put in a struggle for survival.
Sakura Sakurakouji may seem like a frail and demure girl, but in reality she’s a powerful martial artist with an unmatched sense of justice. One day, on her way home from school, she witnesses a boy murdering several people with bright blue flames. That boy is Rei Ogami, a merciless assassin known as a "Code Breaker", and the latest student to join Sakura’s class! While Rei appears to be the perfect gentleman at school, in truth he lives by the principle of "an eye for an eye" and is hired to target and dispose of criminals who have escaped the law. With everyone oblivious to his true nature, only Sakura knows what he really is and his remorseless feelings towards what he does. But despite his icy heart and his threat to burn Sakura and everyone around her should she reveal his secret, the righteous teen can’t help but feel that there’s more to Rei than meets the eye...
Although the two series are very different, there is a similarity in the way the characters try to take the law into their own hands, to kill the criminals where they cannot be justified by law.