Villain

Both are crime-based human dram films, excellent at portraying the emotions of people involving with the crime. That's all I can say, any further may contain spoilers.

Akunin and Ikari have a sort of slow and sprawling dark narrative that feels quite similar. Both with an emphasis on human nature and paying close attention to the cinematography and music. If you like the one, you'll probably like the other.

Tsumabuki Satoshi is in both of these as well.