Lilie

About

A first-year junior high student, Lilie is a distant relative of Ryuuji's deceased wife and now his adopted daughter. She suffers from PTSD (Post Traumatic Stress Disorder) after being involved in a train accident, but she has nearly recovered.

[Source: http://www.cc2.co.jp/hack_bullet/index.html - trans.: www.dothackers.net]