Hey, everyone! How’s it going? Today I’m here to review the drama Glass Heart, which premieres on Netflix on July 31, 2025, and promises to be one of the most exciting J-dramas of the year!
On July 31, 2025, Netflix premieres Glass Heart, a Japanese musical drama based on the classic novel by Mio Wakagi (published from 1993 to 2011). The series tells the story of a university drummer who is unfairly expelled from her band, but finds a second chance when discovered by a genius musician. The drama promises to combine live musical performances with deep emotional storytelling about passion, music, and second chances.
Directed by Kensaku Kakimoto and Kotaro Goto, the drama features high-level musical production, with original soundtrack created by Yojiro Noda from RADWIMPS. The series stands out for its authentic musical performances, as the actors actually play the instruments, creating a unique immersive experience in the J-drama universe.
Akane Saijo: The Drummer Seeking Redemption
Akane Saijo (Yu Miyazaki) is a university student passionate about drums who suffers a devastating injustice when expelled from her band just before debut. Her genuine talent and determination catch the attention of Naoki Fujitani, a brilliant and reclusive musician who recognizes her potential. Akane’s journey represents the struggle of many young artists who face obstacles in pursuit of their dreams.
Yu Miyazaki brings an authentic and exciting performance, capturing both the vulnerability and strength of a young musician determined to prove her worth. Her evolution throughout the series shows how passion for music can overcome the most challenging adversities.
Naoki Fujitani: The Enigmatic Musical Genius
Takeru Satoh plays Naoki Fujitani, a talented and mysterious musician who decides to form a new band called TENBLANK. His reclusive personality hides a heart passionate about music and a unique ability to recognize exceptional talents. The chemistry between Naoki and Akane promises to be one of the series’ highlights.
Satoh’s character represents the musical mentor figure who sees beyond appearances, recognizing genuine potential where others cannot. His decision to recruit Akane for TENBLANK marks the beginning of a transformative musical journey for everyone involved.
TENBLANK Band and Its Dynamics
TENBLANK consists of Akane Saijo on drums, Naoki Fujitani as leader, Sho Takaoka (Keita Machida) on guitar, and Kazushi Sakamoto (Jun Shison) on keyboard. Each member brings their unique personality and personal challenges, creating complex dynamics that enrich the narrative. The series explores not only music but also interpersonal relationships and creative conflicts within the group.
The band’s formation represents more than just a musical union; it’s an artistic family that faces rivalries with other bands, including Toya Shinzaki’s group, and deals with pressures from a powerful music producer. These tensions create intense dramatic moments that keep viewers engaged.
Success on Netflix
Glass Heart arrives on Netflix as one of the most anticipated Japanese productions of 2025, with exceptional musical production that includes live performances by TENBLANK. The adaptation of Mio Wakagi’s classic novel promises to attract both J-drama fans and music lovers, offering a unique experience that combines emotional storytelling with authentic musical performances. The series stands out for its cinematic approach and the quality of original compositions.
If you love musical dramas and stories of overcoming challenges, Glass Heart is the perfect series to binge on Netflix.
An exciting musical journey that shows how passion for music can transform lives and create extraordinary connections.
Series Details:
Number of Episodes: Not disclosed (In production)
Platform: Netflix
Rating: Awaiting premiere
Genre: J-Drama, Musical, Romance
Main Cast: Takeru Satoh (Naoki Fujitani), Yu Miyazaki (Akane Saijo), Keita Machida (Sho Takaoka), Jun Shison (Kazushi Sakamoto)
Antagonist: Toya Shinzaki (rival band)