Episode 7 of "Glass Heart" unfolds six months after the thrilling conclusion of the previous chapter, finding Tenblank officially embarked on a tour that has seen each concert achieve resounding success. Yet, beneath the glamour and excitement, the relentless pace takes a heavy toll on Naoki's well-being, shadows creeping into their joyous endeavors.
In a poignant phone conversation, Naoki discovers that Eiko has found love, her wish for a boyfriend at a shrine finally blossoming into reality. Akane's mother, sensing an opportunity, urges her daughter to visit a shrine with Naoki, a suggestion Akane promptly brushes aside.
Amidst a relaxed moment with the band, Kazushi observes a startling lack of diversity in their conversations, always circling back to music. Akane, seeking a change, proposes a visit to a nearby shrine. Naoki, the lone advocate, finds unexpected company as Kazushi, swayed by her enthusiasm, decides to tag along.
At the shrine, Akane pens a heartfelt prayer for the tour's continued success, her wish subtly intertwined with an unseen, personal aspiration. Curiosity piqued, she peeks at Kazushi's prayer, finding it peppered with playful grievances about Naoki and Sho. Later, Kazushi catches a glimpse of Akane's prayer, revealing her silent wish to remain by Naoki's side eternally.
When Kazushi's behavior grows peculiar, Akane confronts him, believing she's uncovered the truth – that Kazushi harbors feelings for Naoki. Embarrassed yet amused, Kazushi laughs off her misconception without elaborating, just as a reporter's stealthy snapshots catch their attention, prompting them to flee.
Elsewhere, Yukino ventures into uncharted territory with a new song, a stark departure from her established style. She confides in Isagi, expressing her desire for Naoki's compositions, but Isagi reveals Naoki's refusal, maintaining faith that Naoki will eventually return to him. Watching a Tenblank concert video, Isagi's sharp eyes detect troubling signs of Naoki's declining health.
Meanwhile, Kazushi, having lost sight of Naoki, embarks on a search that leads him to find Naoki slumped on the ground, engrossed in scribbling melodies onto a scrap of paper. Kazushi lends a helping hand, fine-tuning the arrangement, and then boldly asks if music alone holds Naoki's heart. Naoki's curt response confirms his singular focus. Seizing the moment, Kazushi boldly declares his intent to pursue a relationship with Akane.
Thus, the narrative deepens, weaving a tapestry of love, friendship, and ambition amidst the backdrop of a thriving musical journey.
During Tenblank's subsequent rehearsal, Yukino bursts into the room with a storm of emotion, insisting that Naoki pen more melodies exclusively for her. She throws a tantrum, but Naoki firmly tells her to calm down and discuss business matters at a more appropriate time. It is Akane who eventually steps in, gently taking Yukino's hand and guiding her out of the room. Yukino, undeterred, warns Akane not to squander her kindness, vowing to stop at nothing to capture Naoki's heart and his unique sound.
Just as tension mounts, a bombshell drops: the company that owns the concert venue unexpectedly cancels Tenblank's concert, leaving scores of eager fans disappointed outside. To make matters worse, all the other venues scheduled for their tour also pull out at the last minute. Could this be the handiwork of Isagi? It appears so, as Naoki confronts Isagi, accusing him of crossing a line.
Some time later, Akane receives a poignant text from Naoki, blaming himself for the cancellation. In a heartfelt gesture, he initiates a live stream and performs a haunting piano melody, dedicating it to all the fans who missed their performance. Akane, moved by his gesture, rushes to his house, her face lighting up with a smile as she witnesses Naoki singing with all his heart. But just as she's about to step inside, Kazushi appears out of nowhere, enveloping her in his arms and confessing his deep love for her.
