Character profile
Hinoki Sai
彩火乃紀Biography
Hinoki Sai is the seventeen-year-old daughter of a famous paleontologist and a childhood friend of Keita. She is recruited as a Head Diver by Akamatsu and Mode Warp and usually presents a sullen, self-deprecating manner. Although she often brushes off Keita's romantic advances, she shows that she cares for him more than she admits.
Story spoilers
Four years before the series begins, Hinoki's parents and older brother vanish during an expedition to India's Ajanta Caves, leaving her orphaned.
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