Ep. 1: Los cambios de personalidad de Shampoo tras usar un colgante misterioso de la colección de su abuela

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Shampoo changes his personality after put a pendant she found in a old jewelry collection from their grandma. The story, originally published in Ranma ½ vol. 22, features a brooch that makes Shampoo feel the opposite of her true feelings for Ranma. Ranma begins to panic at the thought of losing one of his fiancees, and plans to tell Shampoo that he loves her. Forseeing this, Cologne invites all his friends, so once he confesses, he'll be unable to back out of their engagement. This benefits Ryoga and Kuno as well, as they plan to sweep Akane away once Ranma makes his supposed feelings for Shampoo public. (Source: AniDB)