HMX-12 Multi

In the visual novel, Multi is first mentioned in a conversation among Shiho Nagaoka, Masashi Satō, and Hiroyuki Fujita, when the three discuss the school's recent admittance of a maid robot. Hiroyuki later meets Multi, when he saves her from falling down the stairs. Hiroyuki then learns that Multi is a prototype robot undergoing a test run at the school, and the two soon become friends. Throughout the next week, Hiroyuki regularly chats with Multi as she cleans the school's corridors, and often helps her when she becomes troubled by an unfamiliar situation.