Ranma to Ranma? Gokai ga tomaranai - S1-E4
Other mistake: Nabiki pours a bucket of cold water and then a teapot of hot water over Ranma as he sleeps, but he does not wake up. Some heavy sleeper. Also, all of this somehow leaves just a warm patch under her groin area, leading to the obvious misunderstanding. But her pillow and other half of the futon should be drenched too. (00:09:05)
Ranma to Ranma? Gokai ga tomaranai - S1-E4
Continuity mistake: Female Ranma had a shoulderstrap of her tanktop down in a sexy way - once Nabiki turns her back into the male form, his shoulderstrap is back up. (00:09:10)
Ranma to Ranma? Gokai ga tomaranai - S1-E4
Continuity mistake: The shape and order of the 5 pictures laid on the table by Nabiki differ entirely from the POV close-up of Kuno. That happens also with the shots of Akane. (00:12:50)
Ranma to Ranma? Gokai ga tomaranai - S1-E4
Continuity mistake: As Nabiki advances to give Tatewaki's letter to Ranma, seen upside down she is wearing white slippers (or socks), while in the next shot she is wearing orange toed socks. (00:15:10)
Ranma to Ranma? Gokai ga tomaranai - S1-E4
Continuity mistake: Kuno tosses the doll to Ranma; he catches it in horizontal position, but is holding it by the waist in the following shot while Kuno is still mid-sentence. (00:15:45)
Ranma to Ranma? Gokai ga tomaranai - S1-E4
Continuity mistake: Ranma tosses the gift back to Kuno and turns the corner. When water is poured on him from above, there's no trace of any balcony, but in the rest of the scene there it is, a 1st floor balcony in full view. (00:16:00)
