Adopted into the Itsuka’s family household at a very young age, Shido has been living a fairly average normal life until recently.
Going about with his normal life and rescuing Spirits is one thing, but with each new encounter and new Spirits to save, there is always some type of new hardship on Shido's mental health, since he has to deal with the opposite gender, with which he does not have much experience dealing.
Shido has all the looks of an average young man in high school. During the events of Miku Lily, Shido cross-dresses as a girl to interact with Miku, and he disguised himself as his alternate identity, Shiori Itsuka.
With blue hair down to his neck, amber brown eyes, and has straight hair and bangs. During the time he cross-dressed, he was seen with long blue hair, and he wore the standard female Raizen High School uniform.
He also had a hair clip in the form of a flower of some sort.
An average young man that originally had no interests in the opposite gender until he got forced to be by his little sister.
He is now compelled to deal with females on a constant basis, something that he wasn't used to before.
Kotori described another interesting part of Shido's personality.
As a result of being abandoned by his birth mother, Shido has become unusually sensitive to other people's despair.
It is this empathizing nature that makes him regarded as the best person to handle the Spirits.