Enkaku Sōsa: Shinjitsu e no 23 Hiai

Kouji Saitou (斉藤 光志) is a private investigator who finds himself arrested for the murder he did not commit. What's more, he was pretty drunk when arrested and doesn't remember much around the time when the murder took place. Taken into detention, he needs to rely on other people to gather clues and prove his innocence. His girlfriend, Noriko Shinjou (新城 法子), while shocked at first, believes in his innocence and decides to help him find out more about the last night's events and keep him apprised...