 If you liked
Karas
|
 ...then you might like
Sweat Punch
|
Note that this recommendation concerns only the short film called Kigeki (aka Comedy).
Karas is longer but both anime share a lot of aspects. Both have a very dark atmosphere; a solitary dark hero, who is a man of few words; beautiful animation; awesome sword fights; and an amazing and orchestral soundtrack: Schubert’s Ave Maria in Comedy and Prague Symphony Orchestra in Karas.