Koroshiya 1: The Animation Episode 0

This anime acts as a prequel to Takashi Miike's infamous live action film. It shows how bullied school boy Hajime Shiroishi comes to discover his violent side; something that will lead to brutal murder and him being institutionalised. When he is released he has no memories of what he has done, and has the mind of a six year old, but others plan to find a way of using his violence for their own needs and making him 'Killer Number One'.

If you haven't watched the original film, or read the manga, this anime is unlikely to appeal too much; however if you liked the film this is well worth watching. Be warned though it is disturbing at times. The animated violence might not be as extreme as the live action film but it is made more disturbing by the fact that it is made very clear that Hajime is aroused by extreme violence. There is also violent sex in a couple of scenes. The story is interesting enough but at forty six minutes in length it feels a bit rushed; apart from Hajime the characters aren't particularly well developed. The animation might not be of the highest quality but that roughness seems to suit the material. Overall I'd only recommend this to Ichi fans.

These comments are based on watching the animation in Japanese with English subtitles.

This animation is actually based on the manga origins of Ichi the Killer but could still plausibly coincide with the movie. It's well made and VERY GORY. Even worse than the live action because it's animated. Currently this is the only Ichi animation made but more should be coming soon. If you liked the live action movie diffenetly pick this up.

I saw this anime as an add on to the sensory overload that was ichi the killer. I have to say i did not like the anime. As well as i believe it has been done it seems like just another way of squeezing another drop of crimson fluid from a franchise that is already swimming in it.The takeshi miike voiced kakihara is just not even worth mentioning as he hardly even manages any lines. The same set of animation occurs several times in the cartoon which isnt a good sign as the animation is only 45 minutes long.the dub is in an english accent which means no self respecting fan of the live action could sit through it. A must see for ichi fans but a must not buy.

This prequel explains more than the 2003's. Its animation is not the best, but it's not really a problem. It's a reasonable anime.

The original comic comes to life, in this bloody/brutal manga. Nicely animated in the most clean and uncluttered way. Contains some action (sex and violence) that might even be considered too strong, for the real film production. The story is both excellent and thought provoking; in a 'Crying Freeman', type style.