Shizuka Mikazuki is a very rational girl who prefers to act alone and hates being in groups. She is selfish and acts only for her own benefit, perfectly calculating all the risks. She used to work as an accountance and her father was a successful business man, who was abusive and forced her to excel in all things, which she found extremely annoying. She lost her father after the apocalypse and started living by her own. Gets annoyed by people's thoughtless actions and hates when things go wrong.