Reika Hayami and the Uninvited Guest - S1-E5
Continuity mistake: The bad guy digs his fork and knife into the juicy steak, and we get a close-up of that. When he forces out a laughter at Kindaichi's statement a couple of shots later, we see the plate changed; the veggies swapped position and the cut does not match. (00:05:30)
Reika Hayami and the Uninvited Guest - S1-E5
Continuity mistake: When Reika asks everyone who got the first two questions right to stand, the imposter's cup and Kindaichi's are different from just a moment before; Kindaichi's is suddenly empty and both cups are turned (the guy's cup and plate switched side too). (00:10:20)
Reika Hayami and the Uninvited Guest - S1-E5
Continuity mistake: The bloodstains on the back of the pink shirt change throughout the episode, from the time when the victim wore it, to the various phases when the culprit is exposed. (00:19:55)
Reika Hayami and the Uninvited Guest - S1-E5
Continuity mistake: In the hall where Reika holds the quiz, the participants keep changing clothes throughout the scene depending on the camera angles.