Ranmaru is young cop with a dark past. As one of the few survivors of a mindless slaughter in his apartment block, he joins a special unit called TOKKI to avenge his parents. On his first case, the already ghastly murder scene turns to one of terror, as the inhuman killers start to massacre the police. After being saved at the last minute by a secret unit named TOKKO who wield swords instead of guns, Ranmaru's mind is filled with questions and he is determined to find out the answers, no matter what it takes. What are these monsters, and why did they recognize him?
Some things in life are so bad that you'd like to pretend they're just a dream. Unfortunately for Kazuki, trying to save a strange girl from being brutally killed by monsters (and ending up dying instead) is an unfortunate reality. Out of pity, the girl replaces Kazuki's heart with an alchemy-based artifact known as Kakugane, so that he may live on. With this strange device, Kazuki gains the power of Busou Renkin -- Arms Alchemy; a power that will come in handy when monsters (and worse) begin to plague his town! Kazuki soon meets the girl from his “dream” (named Tokiko) in reality, and she tells Kazuki to get on with his life; but with his sister and friends in danger, that might not be possible. Besides, if Kazuki gives up the chance to show off just how manly he can be, how can he hope to win the heart of the alluring older-sister-like Tokiko?!
These anime explore the dilemma of ordinary people who quit their normal lives to join an organization bent on fighting evil. Thus, they learn the value of life, and the extent of their powers. Tokko and Busou Renkin both have a strong storyline and great characters, and are really a matching pair.
They're pretty much the same anime, down to the character designs for quite a few of the characters
Two siblings, Kiyoko and Tatsuya, live in a future reshaped by a terrorist attack known only as "Twin X". In this terrible new world, advanced technology such as computers and radios no longer function and even the very sky has become something terrifyingly alien. With the siblings' mother dead, they are hunted by loan sharks who want recompense for her debt as well as a mysterious Countess who wants them for her own reasons. Even worse, they are also coveted by their father, the terrorist who caused the "Twin X", Gilgamesh!
In both TOKKO and Gilgamesh you'll find singular world events that lead to main characters developing super/special powers that will have a direct effect on later events. You'll also find that there are similarities in family dynamics, state actions, shadow groups with alternative goals to the morality of protagonists.
As the world comes crashing down on them the main characters in Gilgamesh and Tokko develop special powers that have an effect on the world in which they now have to live.
In present day England, a war is being fought. The average citizen does not notice, but vampires are running rampant among the populace, and it's up to the Hellsing organization to contain the bloodsucker threat, using even their own weapons against them. Alucard, a vampire himself, is the best agent the organization has to offer, answering only to Integra Hellsing herself. No one knows much about this mysterious figure fighting against the occult, but things starts to change after he “recruits” a new agent to the establishment...
Both Tokko and Hellsing involve a light hearted cop who becomes part of a secret organization, and both anime have mysterious characters and a fairly dark plot.
Tokko was an interesting series which pined a normal sort of everyday cop into a world of demons and magic. He becomes a hunter of demons. If you like the idea of this you might find Hellsing very much alike in its charcter development and plot. Hellsing takes an everyday "busty" police officer and puts her into a situation not only to die! but also to have her reborn as a vampire who hunts down other vampires.
Fifteen-year-old Ichigo Kurosaki is a typical teen with fighting skills, two caring sisters and a special trait: he can see ghosts. However, when Ichigo and his family find themselves under attack by a huge beast, Ichigo discovers that there’s more to the supernatural world than the everyday specter. Vengeful spirits known as Hollows roam the world in search of devouring souls, and Shinigami – soul reapers – work tirelessly to defeat them and guide normal ghosts into a place called Soul Society. Ichigo valiantly fights the Hollow that threatens his sisters, but on the verge of defeat a Shinigami named Rukia gives him her powers, turning him into a Shinigami himself. Ichigo must now adjust to his new life of both vanquishing and saving souls for the sake of Soul Society.
The Holy Grail War is a battle between seven magicians who each summon a mythical hero to fight for their cause. Shirou, a twice orphaned high school boy, had so little magical talent that his foster father did not bother teaching him about the war and its meaning. Thanks to that lack of foresight, Shirou finds himself in a bit of a pinch when he accidentally summons a hero of the strongest class, and is sucked into the fray. The Grail grants the winner any wish they have. But driven by an unyielding sense of justice and self-sacrifice, for what will Shirou fight?
I loved the way these anime depict fights between magically endowed warriors. Two boys plunge head-first into a world of violence, and sword-wielding girls have to protect them and help them find their own strengths. Tokko is bloody, while Fate is not, but they are both strong anime in their own right, and have compelling and similar storylines. They truly are a match.