This paper doll is a chibi Tewi Inaba, based on the game series Touhou Project, the paper model is created by SSN. Tewi Inaba is one of the many, many youkai rabbits that lives at and guards Eientei, a mansion deep in a bamboo forest - though she's the one all the earth rabbits actually listen to. Because Tewi is known to help lost people find their way and sometimes grants good fortune, she's one of the few youkai that's not harmful to humans at all.
A very lighthearted and playful youkai that's also known for sometimes lying, she even tries to scam Aya out of pocket change during Phantasmagoria of Flower View.
Her full name is Tewi Inaba. Unlike Reisen Udongein Inaba, Tewi's title of "Inaba" is assigned Kanji characters, which refer to the Inaba Province in historical Japan. The legendary story, "White Rabbit of Inaba" (aka "The Hare of Inaba" in English) is mentioned in the Kojiki, which is the most likely reason for the name, and Tewi is very commonly associated with the hare of that story.
The official romaji of her given name was spelled "Tewi" in Imperishable Night but "Tei" in Phantasmagoria of Flower View and Perfect Memento in Strict Sense.
When she first appeared in Imperishable Night, she had dark red eyes, black shoulder-length hair, and white fluffy rabbit ears. She is dresses in a frilly, pink nightgown and had nothing on her feet. When she appeared in Phantasmagoria of Flower View, she wore white socks and a carrot necklace. Her alternative outfit in Phantasmagoria of Flower View was just the same, except her dress is black.
You can download the Touhou Project paper model here: Touhou Project - Chibi Tewi Inaba Bunny Girl Free Doll Papercraft Download [4shared]