Marin Nijihara, one of the few Witch Hunters left in the world, has come to bring divine justice upon the witch Ayumi, but it won't be easy since Ayumi's so powerful and Marin's a ditz. So Marin is determined to attack Ayumi's weakpoints, which involves pestering her around school until Ayumi can't take it anymore. Eventually, Ayumi takes on Marin in a final magical showdown... until Haruo shows up.
Afterwards, Ayumi, Yuri, Maika, and Marin (who now has a crush on Haruo, thinking that he is a saint who keeps Ayumi's magic powers at bay) all prepare boxed lunches for Haruo to eat, but each girl suspects that the others have put in something weird in their lunches. So, they decide to have a taste test to make sure there's nothing wrong in them. However, the cross between all the magic in the lunches have caused the girls to get younger and younger!
魔女退治?ウィッチハンターの使命を担う家系に生まれた虹原真鈴。
新たなターゲットは魔宮あゆみだ！
買い物帰りの強敵を公園で待ち伏せた彼女は、聖なる槍を持ち、あゆみの前に立ちはだかる。
が、ちょうどその場を通りかかった春生が邪魔となり、肝心の勝負は水入りに。
こうして学園の下級生である真鈴は、魔力封印の闘いをキャンパスにも拡大。
吉川3姉妹が魔女であることに気づかないまま、彼女たちからあゆみのウィークポイントを聞き出しあの手この手の奇襲作戦を展開するが……。
Se revela que el nuevo personaje es un cazador de brujas. Más tarde, se trata de atacar a Ayumi y revela su nombre es Marin Nijihara. Haruo continuación, aparece en el medio de lucha, pero Ayumi lo lleva a casa, mientras diciéndole que ignorar Marín.
