Someone has invaded the Yoshikawa residence. But it turns out that the invader is really a witch maid named Rika Anju, who has sent by Ayumi's father to support Ayumi. However, after today's fiasco, Haruo has fallen ill from a magic-induced illness. But afterwards, Haruo is totally fine.
Ayumi doesn't want Rika to look after Haruo, but Rika insists that her orders are to stay by Haruo and keep him in her custody. Thus, Ayumi and Rika have a "service battle" to see which one Haruo wants to have take care of him.
Later, when Yuri and Marin interfere with Ayumi's plans (again), the spirit of fire, Haidenei, has been released from his sealed prison and is now unleashing his fury on the girls!
As the Sports Festival continues, Ayumi, Yuri, Maika, and Marin are each determined to become MVP and win Haruo's kiss!
玄関開けたら即メイド！
しかも、キュートな相手は銃器装備だ！
春生と吉川3姉妹は、自宅に突如現れたヒットウーマンから、
空気弾の手荒な洗礼を受ける。いきなり自宅を正体不明の少女に占拠され、とまどう4人。
ひとまず、春生の記憶をハンマーで消去し、姉妹は物騒なメイドを追い出そうと反撃を開始する。
しかし、敵は千秋、冬乃の弱点を熟知、二人は返り討ちにされる始末。
さらに、武装メイドは一瞬のスキを突いて春生を拉致、
ベッドへ拘束した彼に覆い被さってきた！危うし、春生の純潔？
Mientras que al volver de la escuela, Haruo y sus hermanas se encuentran con un desconocido con una pistola mágica en la casa. Más tarde, se les dice a todos que su nombre se Rika Anju una dama vienen a apoyar Ayumi. Debido a que la hermana se golpeó la cabeza demasiadas veces, ya no es capaz de mantener la magia y será destruido.
