Natsuki’s Classmate C, whose name is Shiraishi, is a minor character in the anime Initial D who appears exclusively during the First Stage. She is a schoolmate and friend of Natsuki Mogi, distinguishable by her glasses and black hair tied in pigtails. Background-wise, she is revealed to be the daughter of the middle‑aged man with whom Natsuki has been engaged in compensated dating, a relationship she refers to as having a “daddy.” Shiraishi’s personality is marked by jealousy and resentment: she harbors a crush on Takumi Fujiwara and is bitter about her father’s neglect of their family. These feelings drive her primary motivation, which is to sabotage Natsuki’s relationship with Takumi and to punish her father indirectly. Her role in the story is that of a catalyst: she writes an anonymous note revealing Natsuki’s secret arrangement and places it in Takumi’s shoe locker, setting off the major romantic conflict between the two protagonists. Aside from this act, she has no further development or growth over the series and does not appear again after this plot point resolves. Her key relationships are limited: she is Natsuki’s classmate (a relationship that ultimately proves deceitful), she harbors unreciprocated feelings for Takumi, and she has a strained, distant connection with her father. She possesses no notable abilities or skills relevant to the narrative.