Kaibutsu Oujo S01E12 - Princess Attrition

While it is raining outside, Hiro needs to pick up Hime and Flandre from the train station, but he is stopped by Sherwood and Fransisca, who force him to play in the arcade with them. As the rain lets up, he returns to the mansion, only to see that Hime comes down with a cold after walking home through the rain. Since the pharmacy is closed, he returned to the arcade, where Sherwood gives him special medicine for Hime. At night, a revived pharaoh comes to kill Hime, given the promise of eternal life. The pharaoh sends his army of mummies to attack the mansion. Due to the drowsy effects of the cold medicine, Hime entrusts her life with Hiro until morning. Sherwood and Francisca later join up with Hiro, Flandre, and Riza to hold off the mummies all night long until they become exhausted in the morning. After Hime wakes up by then, she charges at the pharaoh and slashes him with chainsaws.