Symbols: The japanese chant of Ultimate blade Works - Hero Emiya version
The line is a shortened quote of Ryougi Shiki from Kara no Kyoukai
http://2.bp.blogspot.com/_iCnzf-y60cc/SxKt_Zq8RqI/AAAAAAAABag/xQpZik2qZHk/s1600/shiki-cat.jpg
A person can only kill one person in their lifetime.
I don't want offend this great work, but I just want to say my opinion, the past of Hanako was in my eyes, unfortunately, only a 08/15 tragic past, the first thing that would occur to me what could happen to a tragic fire victims.