タカヤ

The protagonist of main chapters.
Being a war orphan, he lived in a Users Sheltering Facility from the Son Faction around the age of 10. These facilities have a purpose of isolating the Users instead of protecting them, so he spent the majority of his teenage years in an unsociable environment. Due to certain problematic conducts he had with the facility, he became determined to move to the 8th Training School.
His personal robot Lui had been his lifelong partner long before he joined the facility.