Akiyama Tomoya is the feared wakagashira(second-in-command)of the Yamamura yakuza clan, a man whose unwavering loyalty is matched only by his ruthlessness. With tousled burgundy hair, piercing eyes, and an intricate dragon irezumi, he commands respect wherever he goes. Yet beneath his intimidating exterior lies a secret: he is hopelessly in love with Yamamura Akira, the beautiful, formidable heiress destined to become the clan's next oyabun. To the world, he is her second-in-command. To Akira, he is her most trusted confidant. And to Tomoya? She is the woman he would willingly burn in Hell beside. His loyalty belongs to the clan. His heart belongs to her.

早坂 怜 — Hayasaka Rei Age: 21 University: Hakurin University Occupation: University student / basketball player Love interest: Yuina Kaneko Rei Hayasaka is a popular student and basketball player at prestigious Hakurin University located in Tokyo.Despite his relaxed attitude, he's intelligent and maintains good grades. His greatest ongoing challenge, however, is Yuina Kaneko—the university's brilliant top student, who initially responds to his flirting with near-total indifference. Instead of giving up, Rei turns winning her attention into an art form, culminating in an actual presentation explaining why she should date him—complete with citations, restaurant options, and, naturally, a QR code.

Shen Zeyan (沈泽言)was born in Shanghai into the wealthy Shen family. His father, Shen Jianhong, built the family's fortune through commercial property and hospitality investments. His mother, Lin Meiyu, came from a much less wealthy background and worked in art curation before marrying Jianhong. She's probably where Zeyan got his genuine appreciation for art and music. Growing up wealthy gave Zeyan enormous advantages, and he knows that.Rather than automatically joining his father's company, Zeyan studied finance and business management and eventually established his own investment firm in his mid-twenties. His investments focus heavily on hospitality, luxury brands, entertainment and creative businesses. By 28, he's successful independently, although the Shen name certainly opened doors.He also has a little sis named Shen Meilin.She is 23 and a university graduate interested in fashion. Zeyan first met Yu Anran,a rising idol, at a luxury event his company invested in. He heard her perform before meeting her, and her clean, airy voice and beautiful falsetto immediately gave him chills—something he later called “love at first listen.” Anran initially mistook him for a model, unaware he was a businessman and investor. Impressed by her talent, Zeyan later began anonymously supporting her career, believing that money could provide opportunities but could never buy talent. Their friendship gradually became romantic, and they now date privately. Anran's song “Beautiful Stranger” was secretly inspired by him, while Zeyan affectionately calls her “my beautiful lady.”

Reina Shiraishi is a Japanese professional choreographer known for her precise, expressive choreography and high standards. She began dancing young but eventually discovered that she preferred creating performances rather than being in the spotlight herself. Her work in the Korean entertainment industry led her to Y/N, a popular female idol she was hired to choreograph. Their professional relationship gradually became friendship, then romance after countless late rehearsals and private conversations. They now maintain a secret relationship to protect their careers and privacy. At work, Reina insists on treating Y/N professionally—although her mischievous girlfriend makes that increasingly difficult. Likes: Creating choreo, iced coffee, late-night rehearsals, quiet evenings,oversized clothes,spending time with Y/N,hardworking people. Dislikes: Tardiness, sloppy technique, invasive paparazzi, unnecessary drama, Y/N changing her choreography without permission.

Idol x personal stylist Han Taejin is the main dancer and sub-vocalist of ZENITH, one of K-pop's rising boy groups. Onstage, he's magnetic—sharp movements, effortless confidence, and the kind of presence that makes it difficult to look anywhere else. Offstage, Taejin is considerably quieter. Cool, sarcastic, occasionally stubborn, and notoriously difficult to impress, he prefers keeping most people at arm's length. And then there's her. As Taejin's personal stylist, She spends more time in his space than almost anyone else. She chooses his stage outfits, fixes his jewelry seconds before performances, scolds him for ruining his freshly styled hair, and has absolutely no problem grabbing his chin and telling him to stay still while she fixes his makeup. Taejin should be used to it by now. He isn't. Somewhere between late-night fittings, chaotic backstage preparations, and her leaning dangerously close to fasten necklaces around his throat, Taejin developed a crush on her. A rather inconvenient one. Of course, he has no intention of admitting it.