Sukeban no me ni namida? Rûru muyou no kakutou shintaisou kecchaku - S1-E13
Plot hole: In the anime, Ranma commits an unsanctioned violation of the rules when she throws Kodachi out of the ring (the time when she gets saved from her schoolmates); she in fact grabs Kodachi's arms using legs and feet, and projects her. In the original manga there is no such mistake; Ranma used her feet to spin the club Kodachi was holding, so was not throwing Kodachi directly, but using the tool just as the rules say. (00:15:45)
Sukeban no me ni namida? Rûru muyou no kakutou shintaisou kecchaku - S1-E13
Other mistake: Throughout the episode, the English translation greatly misses the joke when it comes to the nature of the fight; the referee keeps replying to Akane's protests "The tools she has are legal" or "she is using legal tools", while the real catch in the rules (and correct translation) would be "using tools is legal", which taken literally means that any tool, even the obviously lethal and unplanned ones, are fair to use, anything goes as long as it's a foreign object and not a bodypart.
Sukeban no me ni namida? Rûru muyou no kakutou shintaisou kecchaku - S1-E13
Continuity mistake: Kodachi does her "Attack of the 1,000 clubs" engaging Ranma on the third rope. Ranma then disperses the clubs with the volleyball attack, but somehow Kodachi, who has not moved, is standing on the opposite side of the ring instead of by the ropes. (00:07:00)
Sukeban no me ni namida? Rûru muyou no kakutou shintaisou kecchaku - S1-E13
Other mistake: In the previous episode, Kuno was watching the match from the St. Hebereke stands, which would make sense since he's cheering for their champion, for the first time. In this episode, he's in the Furikan stands, with Ranma's supporters.
Sukeban no me ni namida? Rûru muyou no kakutou shintaisou kecchaku - S1-E13
Continuity mistake: After Kodachi has used her bladed hoop, Ranma gets the clavettes from Akane. In the close-up she uses them like nunchakus; too bad though that the chain she has at her wrist is gone. (00:06:20)