Nanako is a young teenager girl who has long pink hair, tends to wear her school uniform.
In game, Nanako appeared in short pants, combat boots, short shirt, and long black pony tied hair. Once Nanako got an upgrade, she appears more like her real self, but with short pink hair.
Nanako's shown to be very friendly and understanding, not judging her friend, Akane's, love for games and kept it a secret. Nanako enjoys teasing others and pretends to be interested in other guys to make certain females jealous as a joke, but soon backs off and feel guilty when the teasing went too far.
Not much is known about Nanako, but it appear she knew Akane for a while.
In Light Novel, Nanako is first called "Female Student A", because Nishimura Hideki still don't know her at that time.
In the game, Nanako is a female and on level 63. Her occupation is a Demon's Master and her max HP is 2111.
In the game, Nanako doesn't use any weapons.
In the game it looks like she does have a crush for Rusian and Ako is not please about it.
- Both "Nana" and "Sette" means "Seven" in, accordingly, Japanese and Italian.
- Tends to talk slow, in possible reference to typing.
- Her pet in Legendary Age is called Mu-tan, the same name of her Real-Life pet