 If you liked
Tajuu Jinkaku Tantei Psycho
|
 ...then you might like
Koroshiya 1
|
Though Ichi's plot is a milk for babies comparing to MPD's crazy twists, the whole atmosphere of insanity is pretty the same. Madman killers represented by every second person in MPD and Ichi alone in Ichi, but bloodshed and gore are almost at the same level. So, if you enjoy mad murderers do their work check these series.