Height: 156cm
Three sizes: 86-59-87
Birthday: March 29

Tsugumi is the Library Club president as chosen by Tamamo. Her very best friend is Tamamo.

She is a bit of an airhead at all times but she can manage the club well but always with the help of Tamamo. When Tamamo isn't around for advice about the club, she always asks Kyoutarou for help.