Shizuku Ishiki

シズク・イシキ

Kasumi's twin sister, identical to her if not only for their hairstyle, the fact that she didn't wear glasses, and her upbeat and cheerful personality. Infected with Medusa, despite being left out of those chosen to be cured, among who there was her own sister, she still greatly supported her and insisted for her to take the chance to be saved from Medusa. ~!Their bond grew increasingly strained after Shizuku witnessed Kasumi trying to kill herself, and again when, before parting with each other, Kasumi wished for them to commit suicide together, being incapable to accept a world without her twin. During the ensuing struggle Shizuku accidentally pushed Kasumi over the cliff they were standing, and shocked at the death of her sister, awakened her Medusa power. Transported into Level 4, still overwhelmed by the memory of her sister's death, Shizuku created a countless amount of abominations, initially blobs of quivering flesh, maws and claws which laid waste to the labs while massacring the staff, and only through Zeus' mind-controlling program conceiving the creatures that would populate the ruined island, such as the dinosaurs encountered by the protagonists at the beginning.