Kokomi Teruhashi meticulously crafts her public identity as the quintessential perfect, beautiful high school student, celebrated for her flawless appearance and graceful demeanor. She believes universal admiration is her destiny and consciously upholds this persona. Her reputation extends to improbable luck and favorable chance outcomes, often interpreted as divine favor. Reportedly born exceptionally cute, her beauty made even the delivering doctor blush—a pattern continuing throughout her upbringing that cemented her status as an idealized figure. Beneath this curated exterior lies pronounced narcissism and an intense craving for constant admiration. She genuinely savors the attention and privileges her looks provide, including others' eagerness to fulfill her requests. She strategically employs subtle tactics like her signature "Angel Breath" sigh to summon swarms of male admirers, demonstrating acute awareness of manipulating her image for convenience. Her private thoughts starkly contrast with her public facade. She secretly maintains a list of forbidden phrases people must never say to her, reflecting calculated image management. Despite attention from numerous suitors—including wealthy material ideal Metori Saiko—she develops authentic romantic feelings for classmate Kusuo Saiki. This attraction stems from his consistent indifference toward her beauty and refusal to react with the awestruck "offu" she expects and desires from everyone. His apathy becomes an obsessive challenge, driving her core goal: to force his visible acknowledgment of her perfection. Her charisma has defined limitations. It fails against individuals deeply in love, those possessing inherent purity that enables equal perception of everyone, or those capable of seeing her true nature. Young children like Yūta often embody all three categories, revealing a key vulnerability. Kusuo Saiki, able to read her thoughts and see through her act, remains largely immune and actively avoids her due to the disruptive attention she attracts and his awareness of her unvarnished private thoughts. She relentlessly engineers situations to impress Kusuo or gain proximity. This includes pretending to search for him amid admirers or feigning phone calls. In one instance after losing track of him post-school, she used "Angel Breath" to mobilize a massive search involving posters, online appeals, and a helicopter. While waiting and sipping a milkshake, an invisible Kusuo drank most of it through her straw. Unaware of the indirect kiss then, his subsequent smirk hinted at recognition. A near-collision during her stretch further underscores his unseen evasion efforts. She leads the devoted "Kokomins" fan club. Over time, her fixation on Kusuo evolves beyond seeking admiration. Initially rooted in ego and challenge, her feelings deepen into genuine affection, persisting despite other suitable prospects and defining her character arc. Her physical traits include blue hair, blue eyes, a height of 1.64 meters, and an August 6 birthday. Her blood type is A. She maintains student status throughout her appearances.