“Tenshi Eating a Corndog” is a much discussed concept on /jp/. The significance of it is disputed, so I will focus on one core concept: the symbolism behind it. But first we must identify and explore the key components of it.
Hinanawi Tenshi is a human child that has ascended to become a celestial being. In Hinduism, she would be called a Siddha or a Deva. In Chinese, it would be refered to as a Tian Xian, or heavenly immortal. In Japanese, it would be using the same kanji characters as in Chinese, being called a Tennin. She is also refered to as an angel, although the role of a heavenly messenger is better suited to her companion Nagae Iku. Regardless of which Oriental cosmology she claims the greatest influence from, Hinanawi Tenshi in Touhou: Scarlet Weather Rhapsody is presented as a roving celestial being that decides to cause mayhem out of childish boredom.
A corndog on the other hand is simply a sausage coated in a thick layer of cornmeal batter on a stick. It is considered a quintessential part of the American diet, being a cheap combination between convenience and an arguably delicious meal of protein and carbohydrates. It is not a new concept by any means, but it is something that is also unmistakably modern and mundane.
Thus this is why “Tenshi Eating a Corndog” is so intriguing. Why exactly is a celestial being consuming a corndog, despite having access to the Jade Wine Waterfalls and Immortal Peach Orchards of Heaven? The earthly and celestial is contrasted in an oustanding way.
Take a look at the blue sky in the background and the color of her hair. In the Swami Vivekananda, the concept of infinity is considered blue. Take the air and water, for within the space of our hands, it is colorless, but in a vast quantity it is blue.