Nagai nagai satsujin (2007)

There is a car accident in Tokyo one day and the driver flees the scene. The corpse shows trauma to the head stemming from prior to the accident. The victim has insurance, and a lot of it, so everyone is suspecting some kind of a foul play. The dead man's wife also has a boyfriend. Both of them have an alibi however. The films narrators are the characters' wallets.