I agree with most of you said..
but, concerning Rikumichi's dead body, you said that it was put after Kir had shot Akai. But this is impossible in 3 seconds. I think that the body had been put in the car beneath the seats where Conan hid on chasing Rikumichi. also, the body could have been brought to Akai by one of his allies in the car that passed Kir while waiting for Akai