Ep. 4: Yukari wird durch Mako erwachsen, verliert jedoch gegen Kurumu und sieht Makos wahre Natur

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Bothered by the fact that Tsukune apparently does not pay attention to her due to her size, Yukari goes to the infirmary, where Mako Yakumaru, the school nurse, turns her into an attractive adult. She catches the attention of every male student down the hallway, but Tsukune tries to remain indifferent with her appearance. During the physical examinations, Kurumu somehow still manages to better her in their body measurements. Yukari returns to Mako and asks her to increase her breast size. However, Mako reveals she was only helping Yukari so that she could feed on her negative emotions and growing despair. Mako, altering her fingers into tentacle-like barbs, restrains Yukari by injecting hypnotic fluids into her in order to feed on her again. However, after Tsukune removes the rosary from Moka's neck, Moka's inner self and the other girls swiftly defeat Mako, which all of this is unseen to Yukari. After returning to her child-like state, Yukari decides that she will grow up naturally and asks Tsukune to wait until then. She then kisses him, being the first to do so, much to the chagrin of the others. (Source: Wikipedia)