水坂 憐

Aka Leviathan (リバイアサン). /
No one knows where she came from, yet she exists in cyber space. She seems to have some unknown relationship with Tooru. Tooru's stepsister, she died in an old military lab as an experiment of the "Brain Project" when Tooru was younger (around 12 years old)./

From url=http://anidb.net/perl-bin/animedb.pl?show=character&charid=10468AniDB