Shouya Ishida and his friends start the story by bullying Shouko Nishimiya, a transfer student who was born deaf. When the school principal investigates, the blame lands squarely on Shouya, and a confrontation ensues that leaves Shouko transferring to another school while he keeps hold of her notebook—the stubborn, irrefutable remnant of the harm done. The film then unfolds as a study in consequences: the stigma of being involved in the incident follows Shouya through middle school, coloring every relationship he tries to build and haunting his sense of self.
In high school, his past casts a long shadow, turning Shouya into a withdrawn, moody loner who even believes that suicide might be his only absolution. Yet this is not a tale of doom alone; it becomes a quiet, stubborn search for redemption. The narrative moves toward forgiveness as Shouya begins to repair the damage he caused, setting the stage for a fragile reconciliation with Shouko when he returns her notebook at a sign language center where she attends. The moment carries the weight of years lost and a chance to start again, framed by the shared loneliness each character carries.
As the bridge between them slowly rebuilds, Shouya forms a bond with Tomohiro Nagatsuka, a classmate who feels just as isolated. Around this growing core, Shouko re-enters the lives of old classmates and makes new connections: she reconnects with Miyoko Sahara, a kind friend who had once befriended her, and she encounters Naoka Ueno, a former bully who sews herself back into Shouko’s orbit in complicated ways. The circle widens further as Shouko meets Miki Kawai, the elementary school class president who now attends the same school and is in a relationship with Satoshi Mashiba. These relationships illuminate how empathy, envy, and loyalty compete for space in a shared classroom and a shared past.
Romance and misunderstanding mingle as Shouko tries to express herself: she gives Shouya a gift and confesses feelings, but a miscommunication sends a tangle of emotions spiraling. To diffuse the growing tension, they plan a day at an amusement park with a broader group that includes Miyoko, Miki, Satoshi, and Naoka. Naoka’s return to the fold—her infatuation with Shouya and her efforts to reconnect old friends—adds friction to the dynamics, and a confrontation at the park is worsened when Naoka records a moment that Shouko and Shouya would rather forget. In the tense aftermath, Miki’s choice to reveal aspects of Shouya’s past to the others further fractures the group, leaving Shouya more isolated.
The story also centers on Shouko’s sister, Yuzuru Nishimiya, whose presence intensifies the stakes. After a troubling incident in which a photo taken by Yuzuru goes online and could suspend Shouya, the younger girl runs away from home. Shouya reaches out and offers her a place to stay, and the two begin to form a quiet, healing bond that shifts Shouya’s sense of responsibility toward the sisters rather than just toward Shouko alone. Their growing closeness becomes a counterweight to the misunderstandings that still linger with the others.
A further thread follows the family’s pain as Yaeko Nishimiya, the grandmother figure, passes away, an event that casts a somber light over the siblings and their friends. In the wake of this loss, Shouya and Shouko move through moments of grief and resilience, guided by the sense that their lives are no longer theirs alone to manage. Shouko’s world begins to feel larger and, for the first time in a long while, less defined by the shadows of their past bullying.
The drama crescendos at a fireworks festival. Shouko leaves early to focus on her homework, and Shouya follows to retrieve Yuzuru’s camera, only to witness Shouko on the verge of a dangerous choice. The river becomes a stage for a devastating turn as Shouya falls in and is rescued by former peers Kazuki Shimada and Keisuke Hirose, leaving him gravely injured and in a coma. In the wake of the accident, a dream sequence shows Shouko imagining a farewell from Shouya, hinting at the deep fears that have shadowed both of them for years.
When Shouya awakens, he makes a solemn pilgrimage to the bridge where the pivotal moment began and finds Shouko there, weeping. He apologizes for the bullying and rejects any notion that she is to blame for his life’s trajectory. He also reveals his earlier plan to end his life, but he has decided to keep living and asks Shouko to help him do so. Her response is a quiet, hopeful agreement that signals a turning point in their relationship. The reconciliation reverberates beyond the two of them, as Shouya returns to school and reunites with the friends who still care for him, and the group eventually makes their way to the school festival together. The moment is deeply emotional for Shouya, who finally recognizes the genuine care that surrounding people still offer him, and he experiences a profound sense of redemption as the story closes.
