Netflix's Glass Heart: First Impressions

The cast of Glass Heart - Netflix©

On July 31, 2025, Netflix released another eagerly awaited J-drama, this time featuring the legendary Satoh Takeru. I've just completed the second episode out of the ten available, and here are my initial thoughts on the series.

Based on the Japanese novel of the same name by Mio Wakagi, the Netflix series Glass Heart is a musical drama that follows the journey of a new rock band called TENBLANK.

The story centers on Akane Saijo, a talented aspiring drummer who is suddenly kicked out of her band just before their debut. Feeling lost, she has a chance encounter with Naoki Fujitani (Satoh Takeru), a reclusive and brilliant musician who has been searching for her after hearing her impromptu drumming in the rain three years prior. Naoki, who is forming a new band, sees Akane's raw talent and invites her to join.

Akane becomes the fourth member of TENBLANK, joining Naoki (singer/multi-instrumentalist), guitarist Sho Takaoka, and pianist Kazushi Sakamoto.

First of all, the series looks amazing. This is definitely on par with the flagship J-drama/Netflix shows like First Love and Beyond Goodbye in terms of quality and cinematography.

Another element of the show that I adored is the musical performances and the drama surrounding them. The first episode featuring Naoki and Akane performing in the rain, perfectly in sync despite their distance, was remarkable. The way the scene alternates between Naoki and Akane beautifully conveys that elusive musical chemistry. Naturally, the slow-motion scenes are the icing on the cake of this visually captivating show.

To my knowledge, Satoh Takeru either produced or was significantly involved in the creation of the show. I felt that his character was specifically crafted for him. He embodies the image of a J-pop idol perfectly, while also possessing that "mad genius" quality that adds depth to the character. His signature knitwear and turtlenecks are prominently featured as well.

Regarding the storyline, there's not much to comment on after just two episodes. I understand the setup and the concept of tracking this rising band's journey from rags to riches is intriguing, but it doesn't seem fully developed to me yet. It's certainly not groundbreaking in terms of storylines.

A full review is on the way once I've completed the show.

Glass Heart is streaming globally on Netflix.