What is Kagome's middle name?

Answer 1

She doesn't have one. The use of middle names in Japan is not very common, and Kagome is one of millions of modern Japanese people without a middle name.

In Japanese culture, emphasis on the family is often more important than the individual, which is why the surname (Higurashi) is often given first when meeting someone for the first time, or is used out of respect (Higurashi-san). A middle name would only make an individual stand out more, which is why they're not commonly used for Japanese names.

The fact that Kagome is often referred to by her given name instead indicates that she is open, honest, and forthright with people: she trusts them and they like her. Conversely, using one's given name without that friendship (as Kagome has with Inuyasha, Sango, Miroku, Shippo, and Kaede) can be considered extremely rude.