Yuki is a young university student in her first year, struggling to adjust after a childhood spent deeply engaged in the virtual world. She was immersed in video games and otaku culture, leaving her ill-prepared for the real-world challenges of university life.

After moving from her parents' rural home to a small apartment in Tokyo, Yuki largely stays in isolation, depending on her parents’ financial support. However, that support is now at risk, with an ultimatum forcing her to either focus on her studies or find a job. Both choices are overwhelming for Yuki, as they involve stepping outside her comfort zone and confronting her intense social anxiety.

When her financial support is cut off, Yuki musters the courage to apply for a part-time job at a lolita/grunge fashion store she frequently visits. This job allows Yuki to sustain herself, continue her studies, and remain in the city. As an aside, she is loosely acquainted with another regular customer, Dami, who often visits the store as well.

One day, Yuki comes across an unusual online advertisement for product testing. Intrigued, she responds and is invited to a warehouse where she begins exploring a side of herself that allows her to step out of her anxious shell. In this new environment, Yuki discovers a space where she can let go of her inhibitions, becoming more comfortable in social settings and breaking free from her fears.

Yuki’s main hobbies revolve around video games, eroge visual novels, and immersing herself in otaku culture. She has built a significant online presence, with many friends she’s never met in real life.

Fashion is a key outlet for her self-expression, particularly subcultures like Lolita, grunge, and Harajuku styles, which help her manage her shyness by allowing her to feel secure in the "costumes" she wears.

Though she dreams of cosplaying at large anime conventions, her social anxiety has prevented her from attending. Recently, through her job as a product tester, Yuki has begun to explore new experiences, gaining confidence and expressing herself in ways beyond the virtual world.

Yuki is also a talented cook, learning a wide range of recipes and techniques from cultures around the world through YouTube. Unfortunately, her lack of real-life friends hinders her from hosting the extravagant dinner parties she dreams of.

Yuki stands at 157 cm, an average height for her area. At home, she prefers to dress comfortably in pajamas, onesies, or sportswear. Outside, she uses her subculture fashion as a shield, hiding behind her carefully curated style.

She has striking blue eyes and very long dark blue hair, typically styled in two long pigtails with bangs framing her face. A distinctive feature is the blue hairpins she always wears on her left bang, a treasured keepsake from a collector’s edition of her first eroge visual novel.

Yuki takes meticulous care of herself, exercising frequently and maintaining exceptional hygiene, always conscious of her appearance. She also sports a barcode tattoo at the back of her left ankle.