Saijo Akane, a drummer who was ousted from her previous band just before her debut, is unexpectedly chosen by Fujitani Naoki, a reclusive and brilliant musician, to join his new band, TENBLANK. Together with band members Takaoka Sho and Sakamoto Kazushi, the band gains fame through Fujitani's distinctive compositions and their electrifying performances. As TENBLANK rises to stardom, they face numerous challenges, and Akane's journey from obscurity to stardom unfolds as Fujitani's secrets emerge. Will the band withstand the storm, and where will Akane's heart lead her? (Source: Netflix) ~~ Adapted from the novel "Glass Heart" (グラスハート) by Wakagi Mio (若木未生). Edit Translation
- English
- Arabic
- Русский
- Українська
- Native Title: グラスハート
- Also Known As: Gurasu Haato
- Director: Kakimoto Kensaku, Goto Kotaro
- Screenwriter: Tomoko Akutsu, Okada Mari
- Genres: Music, Romance, Drama
Where to Watch Glass Heart
Subscription (sub)
Cast & Credits
- Satoh TakeruFujitani NaokiMain Role
- Miyazaki YuSaijo AkaneMain Role
- Machida KeitaTakaoka ShoMain Role
- Shison JunSakamoto KazushiMain Role
- Suda MasakiShinzaki ToyaSupport Role
- Karata ErikaKai Miyako [TENBLANK's manager]Support Role
Reviews
tokyo soul
I’m still thinking about Glass Heart. I am genuinely obsessed with it and there is really no other way to describe the feeling. Just about everything in this drama worked for me. The sharp clothing, the acting that actually felt like real life, the music, and that heavy, unmistakable feeling of being in Tokyo all just clicked. It reminds me exactly of how I felt watching Jeongnyeon: The Star Is Born. It is that rare moment where everything just fits and you aren't just sitting there watching a story. You are getting pulled into a world that feels completely realized.Every aesthetic choice felt like it mattered. From the texture of the jackets to the specific way the neon lights hit the city streets, everything had a purpose. Most shows try way too hard to force a vibe, but this one just lives in it.
The way he builds the band was a huge highlight. I loved how he explains exactly why each member is required. It makes it clear that this isn't just a group of people playing instruments. It is a specific chemistry needed to make the sound work. Sure, there were pitfalls along the way, and his medical condition was a little trite. It is a trope I have seen a thousand times, but honestly, I am willing to overlook it because the show is just that good. It didn't kill the momentum because the focus stayed on the craft and the struggle to create something real.
The fashion and the look of the show deserve their own conversation. It isn't just about the characters looking good. The clothes fit the mood of Tokyo and the weight of the scenes perfectly. There is a grit to the style that feels grounded in the actual music scene. It avoids that sanitized, fake look that usually ruins these kinds of productions. And the music? It is a miracle.
Usually, dramas about musicians have these cringey, fake tracks that pull you right out of the moment, but here the music actually hits. You can feel the vibration of the strings and the intentionality behind every single note. It doesn't just play in the background. It is a character in its own right. The sound design pulls you into the creative process so deeply that you can practically feel the air in the room during the recording sessions. It is symphonic.
I know some people think the romance wasn't necessary, but I didn't mind it at all. I actually think it served a purpose that most viewers are probably missing. To me, it was the specific spark that allowed him to finally transform his music into Ten Blank. Without that connection, he would have just stayed looped in his own internal sound, repeating his own familiar patterns until he faded away. The romance was not just a plot point for the sake of having a love interest. It was a creative necessity for him to grow as an artist. It gave his music a new dimension, and watching that transformation was incredibly powerful. It turned his art from something solitary into something expansive.
The show also builds incredibly well toward the end. The final episode almost feels like fan service, but in the best way possible. It does not feel forced or over the top or like something that shouldn't be there. It felt earned. The detail in this show is just on another level and the characters actually respect the audience. It is the kind of show that stays with you long after the credits roll. The acting is so grounded that you forget you are watching a scripted show. It isn't just another drama to check off a list. It is a mood and an experience that I keep going back to in my head. I finished it and immediately felt that specific void you only get when a show actually means something. I walked away feeling like I had actually been somewhere, and that is a feeling that is almost impossible to find anywhere else.
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When the music burned brighter than the actual plot!
Sometimes, music is the way to express ourselves, and the drama leans heavily into that. Music didn't just set the mood here, it hijacked the plot, stole the spotlight and not in a subtle way. It's the heartbeat of the story. With every strum, beat and verse, the drama tries to convey things its characters can't say directly and even when the writing slips, the music saves it all.The story revolves around Saijo Akane, a drummer who her previous mates abandoned, and gets a second chance when she is invited to join the band "TENBLANK".
TENBLANK band members or should I say the "plots" :
✨Fujitani Naoki: He was the genius but eccentric composer with a messy heart and even messier hair. The creative nucleus of the group. I would describe him as intense, obsessive, borderline reclusive, but a fascinating creature. Under all that facade, he is a man weighed down by unresolved emotions and secrets he would protect at all costs. Takeru Satoh did a great job. I know he is a fine actor and it showed. I recently saw him in Marry my husband and the character difference shows his versatile range.
✨Takaoka Sho: He was the guitarist who didn't demand attention but had mine from start to finish! He was soft spoken, observant and incredibly skilled. Machida Keita completely stole the show for me. From episode one to the finale, his styling was absolutely flawless. From the turtlenecks to that effortlessly perfect long hair, every detail was on point. I know this isn't exactly about his acting (which is already well-respected, no need for testimonials there) but the look he served in this drama was iconic. He had me catching second lead syndrome so bad. I mean, imagine ignoring Satoh... and yet, here I am.
✨Sakamoto Kazushi: He was sharp, confident and wasn't afraid to speak his mind, especially when it came to challenging Naoki's authority. But I feel the writing didn't give him enough to fully bloom. We get glimpses of pride and conflict but it feels underdeveloped. Shison Jun did a solid job in portraying this character. He played the perfect tsundere.
✨And the newly added member was Miss Sajio Akane, the underdog drummer, as they say. She had grit, she listened, she learned and she put in the work, not just for show. Nothing she did felt fake or wasted.
Miyazaki Yu gave a genuinely likeable and grounded performance. She played the perfect mix of insecurity and inner fire. I rooted and cheered for Akane.
🔥 Wild card Toya: I know he isn't the official member of TENBLANK but he isn't the one to ignore. You just can't! He is the kind of character who could walk into a scene mid-chaos and steal every ounce of attention. He is a loud, intense bona fide rockstar who seemed crazy but beneath all that is a man who is haunted by choices, loss and love that never really left. He is both tragic and unforgettable. Some scenes definitely tossed realism out the window, but it served the drama and I ate it up.
Maski Suda devoured this role. At first glance, I didn't recognise him. He was raw, a bit feral and had the reckless energy exuding. You just can't look away.
But not everything in the mix felt right. While the music and the stellar cast were a win, the pacing was all over the place, especially in the second half. This would be just me but we (I) DO NOT need a romantic subplot to show up like the last-minute guest. The story would have worked fine without a romantic storyline, it might have worked better if I were being honest. We could have focused more on the other band members and their stories. I feel there was barely any spotlight given to them. There were times it felt like a one-man show, but then a group performance glossed over that feeling, but it definitely lingered more than it should.
Another thing I noticed and maybe this is just me (again), was how the energy and adrenaline would spike during each performance, but then drop off right after. It didn’t really carry over once that fantastic music stopped playing. The in-between moments felt a bit dull and I kept waiting for them to practice or be back on stage to feel that energy again.
Maybe this is what happens when you have full-blown performances. This wasn't just "slap a ballad or two on it" drama but it gave us actual bangers. I feel the music is the main plot here and the rest of everything feels secondary.
The cinematography was stunning, especially the rain shots. And the camera work during the concert sequences was pure artistry. It screamed budget in the best way.
Overall, despite the scratches, this was an entertaining and binge worthy watch. It didn't exactly stick the landing or maybe I had high expectations from the actual plot "writing", but the journey is worth it for the vibes, stellar cast and amazing soundtracks. It's the kind of predictable plot where you will be rolling your eyes a bit but still replay the songs on loop. Not perfect, but comfortable in its own ways.
If you have made it this far, thank you for reading my review! <3
I thought I was going to keep this short… and yet here we are lmao. If you decide to check out the drama, I hope you enjoy it as much as I did!
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Recent Discussions
| Title | Replies | Views | Latest Post | |
|---|---|---|---|---|
| Glass Heart OST + songs featured/used + jdramas/movies with great ost or w/ music theme alike by idkk_ | 0 | 0 | No discussions yet | |
| Glass Heart OST Collection Thread by TimiZero | 7 | 0 | TimiZero Aug 27, 2025 | |













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