古谷 千紗

Birth year: 2033

Main character of episode 2
Misora's daughter.
4 years after her disappearance, Chisa's last trace - a distress signal was found inside the mountain by the URH, which remains known only among the vigilantes until now.
Later on in the story, the reason behind Chisa's expedition into the mountain is revealed. Having an interest in MP since her young age, Chisa has always been studying hard and top off every examination in school. However, practical experience is required if she wants to get recommended into a decent academy. With that thought in mind, she decided to go to the mountain - "enemy"'s territory, in hope of using her MP to capture one of "them" alive.