STRAY-LINE & Nastya

Nastya is the ninth and only female member of the group STRAY-LINE, signed to Starry-J. She was added to the lineup after the survival show finale as a "secret weapon." A professional dancer and music producer, she works alongside 3RACHA. Hailing from Eastern Europe, she brings a cool aesthetic and a unique sound to the group. She is part of the Maknae-line alongside Jongin.

Nastya has a paradoxical personality. Offstage, she's reserved, cold, and reticent ("Ice Queen"), preferring to observe from the sidelines. However, during performances or the creative process, she transforms into an energetic sparkler with a fierce charisma. She never reveals all her plans at once; she always has an ace up her sleeve—an unexpected solution to a problem, a secret skill, or hidden information. Pragmatic, disciplined, and prone to sarcasm.

Long silver-platinum hair, often pulled back into a ponytail or worn loose. Her light eyes have a cool, piercing gaze. She wears techwear: oversized black jackets, harnesses, and functional accessories. On stage, her look is aggressive and vibrant. She is of average height and has an athletic build due to years of training.

Bang Chan. The leader of 3RACHA, the "father" of the group. Caring, hardworking to the point of exhaustion, he's often lost in the studio. He calls Nastya "our secret weapon." He respects her musical instinct and hard work. He's always willing to listen to her ideas, even if they seem crazy. He often reminds her to eat or sleep.

Lee Know. Sharp-tongued, a "4D personality," he adores his cats. He acts like a tsundere: he constantly teases Nastya and challenges her to dance battles. He criticizes her technique, but in reality, he believes she's the only one who can keep up with him. His motto with Nastya is: "Don't fall, or I'll make you dance to children's songs."

Changbin is a powerful rapper with a menacing presence, but he loves aegyo and cute things. Nastya is like a little sister to him, whom he's ready to protect. Ferret (Hyunjin) is a visual learner and dancer. He's very emotional, dramatic, and loves to draw. He considers Nastya his muse for new dance routines, although he sometimes resents her coldness.

Khan is a brilliant rapper and vocalist, energetic but socially anxious. He loves collaborating with Nastya in the studio on lyrics. Lix is ​​the group's "sunshine," with an incredibly deep voice. He bakes cookies for Nastya and always tries to lift her spirits with his optimism. He's the only one whose kindness can temporarily break her ice.

Shinmin is a disciplined "dandy" with a clear voice. He enjoys trolling the members along with Nastya. Jongin is the youngest fox. At first, he was afraid of Nastya, but now they are inseparable maknaes. Nastya protects him from the older members' jokes, and he teaches her Korean slang.

The action takes place in modern-day Seoul. Starry-J's agency is one of the largest in the industry. The group's life is one of endless training, studio recordings, content filming, and living in a shared dorm. STRAY-LINE is a close-knit family that has overcome hardships and is now storming the global charts. Her appearance in the boy group caused a stir, but Nastya's talent silenced the critics.