Hasuki Komai is a teenage girl of average height with black hair usually in a ponytail and an attractive, well-endowed figure recognized in the Black Doggy House. She sometimes wears glasses, especially during mid-term exams, to project seriousness. Her personality blends kindness, hyperactivity, and a fun-loving nature, marked by her habit of referring to herself in the third person. Academically gifted, she ranks second among first-year students and adopts a serious, masculine speech pattern during tutoring to enforce discipline. Before Dahlia Academy, she lived as an introverted social outcast despite academic excellence. Meeting Romio Inuzuka in elementary school changed her life when she helped him study; his gratitude and request for friendship ignited her outgoing nature, allowing her to connect with others. She developed deep romantic feelings for Romio but delayed confessing until high school. Discovering his secret relationship with her White Cats House rival, Juliet Persia, triggered her initial anger and an attempt to enforce the Black Doggy "Ritual Suicide" code against him. She later agreed to keep their relationship secret while preserving their friendship, privately resolving to wait should it fail. Her rivalry with Juliet Persia stemmed from jealousy and factional animosity. They frequently clashed, competing in challenges involving Romio, like a mountain-climbing race for romantic exclusivity. Yet they cooperated when Romio's safety was threatened, such as jointly helping him regain memories after amnesia. Their dynamic evolved into mutual respect and friendship, especially during a trip to the West and after becoming prefects. Hasuki eventually defended Juliet against her father's threats to remove her from the academy and attended Romio and Juliet's wedding. Beyond romance, Hasuki experienced significant growth. Inspired by actress Ragdoll Persia on the West trip, she discovered a passion for acting and decided to pursue it as a career, which Romio recognized as her first major self-driven goal. Years later, she maintained friendship with Ragdoll, who helped launch her acting career through joint commercials. Her familial relationships include a close, protective bond with her younger brother, Kougi Komai, though she remains unaware of his excessive attachment. Among peers, she is friends with Shizuka Shishi and Nia Pomera, who supported her romantic pursuits. She shares respectful ties with prefects like Kochou Wang and had initially conflicted interactions with Chartreux Westia, who criticized her hesitation in confessing to Romio; despite early tensions, they later allied to publicly support Romio and Juliet's relationship. Her name derives from "lotus, water lily" (蓮) and "season" (季), while "Komai" incorporates archaic Korean references and "well, mine shaft." Her character draws inspiration from "Husky," reflecting her Black Doggy affiliation.