宮﨑優

Yu Miyazaki represents the fresh, dynamic energy within TENBLANK. As the youngest member of the core cast, her inclusion brings a narrative of discovery and burgeoning talent to the project.

While Takeru Satoh, Keita Machida, and Jun Shison bring established star power to TENBLANK, Yu Miyazaki’s journey is that of a rising star whose role in Glass Heart serves as a powerful career launchpad. Her filmography prior to 2025 includes supporting roles in television series such as Takane & Hana (2019) and Joshi Gourmet Burger-bu (2020), and films like Lesson in Murder (2022), which established her as a capable working actress.

However, her role as the band's drummer, Akane Saijo, is unequivocally her most significant to date. The decision to cast an actress with pre-existing musical talent points to a wider industry trend of valuing authentic skills, especially for a project like

Glass Heart that aims to cross over from fiction into a real-world musical debut. This "authenticity casting" adds a layer of credibility that is crucial for the project's success. It allows the band to be marketed not just as a dramatic element, but as a genuine musical endeavor with Miyazaki as its rhythmic core.

The strategy has paid off, with early fan reception highlighting her performance. Viewers have praised her "amazing performance" and noted that she appeared to be "actually playing" her instrument, a detail that greatly enhances the band's believability. This positive feedback underscores the importance of her casting and positions her for a major career breakthrough following the global release of the series.

Yu Miyazaki's body of work, while more concise than her co-stars', shows a steady progression towards her breakout role in Glass Heart.

Yu Miyazaki - Filmography (Film)

Year	Title	Role
2019	Ninkyo Gakuen
2021	A Girl on the Shore
2022	Lesson in Murder	Akari Kano
2024	Shotai	Karin

Yu Miyazaki - Filmography (Television)

Year	Title	Role	Network/Platform
2019	Takane & Hana	Mizuki Ogawa	Fuji TV-FOD
2019	Where Have My Skirts Gone?	Marina Sakamoto	NTV
2020	Joshi Gourmet Burger-bu	Daria Mito	TV Tokyo
2021	Omimi ni Aimashitara	Aika Szumori	TV Tokyo
2022	Chaser Game	Miwa Miura	TV Tokyo
2025	Glass Heart	Akane Saijo	Netflix