第4話: ランサは、旧制学校での決闘を逃した報復を求めるリオガと対峙する。

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One morning at Furinkan High, Ranma is ambushed by Ryoga Hibiki, a martial artist who wants revenge against Ranma, although Ranma doesn't seem to recognize him. Ryoga later explains that he and Ranma used to attend an all-boys middle school together (which Ranma only attended for a short time due to his ongoing training). There, Ryoga challenged Ranma to a fight but Ranma failed to show up, fueling Ryoga's desire for a revenge. Ranma recalls this and explains that he waited at the agreed-upon place for the fight for 3 days, but due to Ryoga's extreme lack of orientation and direction sense, he ended up reaching there on the fourth day, by the time which Ranma had already left. Ten days later, Ryoga challenges Ranma to a fight again, wanting to settle their unfinished score. During the fight, Ryoga learns of Ranma's curse, something which makes him even more enraged at Ranma. Akane & Ranma also end up having an argument with each other in the middle of the fight, leading to Ryoga's missed attack chopping off Akane's long hair. (Source: Wikipedia)