Usami Renko Science Dept. first year. Loves anything mysterious. Tends to poke her nose into other people's problem. Smart, but a bit odd. Mary considers her a weirdo.

Maribel Hearn Literature Dept. first year. Nickname: Merry. Likes to read all year round. Not very sociable. Renko got her eyes on her around since admission and has stuck with her everyday since then.

※Note: Every other characters' appearances, names and personalities except for Renko and Maribel were all based on original characters from the Touhou series. There are no different person or anything of the sort in particular.

Hinada Aki Literature Dept. first year. Mary's childhood friend and one of the few who understands her well. An avid reader. Has a very exceptional memory.

Minazuki Sakuya Owner of the Lunar Clock Teahouse. A very elegant lady.

Hatsumi Chie One of the librarians for the university's library. A serious person. Kokoa's upper classman.

Kumagai Kokoa One of the librarians for the university's library. A klutz who falls a lot.

Konno Youko Literature Dept. first year. Yuuko's childhood friend.

Saienji Yuuko Literature Dept. first year. Mary's friend.

Akai Misuzu The Lunar Clock Teahouse's employee. Still a beginner.