Yukiyasha Legend Murder Case: File 1 - S2-E14
Other mistake: Throughout the whole three-parter, whenever the characters are in the snow, it comes down at really sharp (45°) angle with a whistling wind, but their hair and clothes are entirely unperturbed.
Yukiyasha Legend Murder Case: File 2 - S2-E15
Audio problem: Hibiki is quickly browsing through screenshots. Kindaichi yells 'Stop' when he spots a detail. Miyuki then asks about it, but her mouth is animated opening and closing a second before the voice first comes out. (00:07:35)
Yukiyasha Legend Murder Case: File 2 - S2-E15
Continuity mistake: When the trio of detectives discovers Hiruta's body, the banknote under the left arm is in a different position between shots. In wide angle there is a sizeable distance between it and the side of the table, they are ultra-close in close-up. (00:13:50)
Yukiyasha Legend Murder Case: File 3 - S2-E16
Continuity mistake: When Kindaichi threatens Kenmochi with his big scissors, they are closed in one shot, open in the close-up. (00:02:40)
Yukiyasha Legend Murder Case: File 3 - S2-E16
Continuity mistake: When Kindaichi reveals to the audience that the suicide wasn't a suicide, Reika's hand is on top of the armrest in one shot, and gripping the edge of it in the next. (00:04:15)
Yukiyasha Legend Murder Case: File 3 - S2-E16
Continuity mistake: During the denouement, Kindaichi places the green box on top of the blank sheet he used for the demonstration, and you can see it on the table. In the rest of the scene, the box and the scissors are there, but the sheet quietly disappears from the table, coming back only when the first angle is reused. (00:05:45 - 00:06:35)
Yukiyasha Legend Murder Case: File 3 - S2-E16
Factual error: Kindaichi begins his revelations at 4:10, and the time gradually shifts at 4:20 (which is a bit much for the amount of information revealed and the dynamics of the conversation, but okay). He then moves to the river, which is a couple minutes away from the house by car, to deliver the rest of his speech, and the sun dawns at that moment. It's a Japanese winter with -20 C°, the sun surely wouldn't rise at 4 AM. (00:06:30 - 00:12:00)