Sekirei (2008)

S1E4 The Strange Tale of Maison Izumo

Strange occurrences unsettle Minato, Musubi, and Kusano at Izumo Inn. All the while, an enigmatic girl keeps Minato under secret observation. While out shopping for groceries, Musubi suddenly finds herself targeted by an orbiting weapon—one commanded by that same mysterious girl. Later, the girl catches Minato off guard in the washroom.