Kazuki Kazami is a major supporting character in the anime and visual novel series 'Grisaia no Kajitsu' (The Fruit of Grisaia). She is the older sister of the protagonist, Yuuji Kazami, and is recognized for her exceptional intelligence and mysterious demeanor. Presumed dead for much of the story, Kazuki’s influence continues to shape events from behind the scenes. Her resourcefulness and devotion to Yuuji play a critical role in unraveling the series' complex narrative, making her integral to the overall plot.