The film's distributor, Shochiku, listed the movie adaptation release in Q4 2016. In the Weekly Shōnen Magazine's 46th issue of 2015, that released on October 14, 2015, Kyoto Animation and Naoko Yamada were announced to be the animation studio and director of the film adaptation, respectively. The movie adaptation of the manga was announced in the manga's final chapter that was released on November 19, 2014, later specifying that the adaptation will be an anime theatrical movie on December 17, 2014. On April 8th, Kyoto Animation revealed the film's release date, teaser visual, teaser videos, the staffs involved and main characters' design. Presenting teenage companionship and social relationships in a frightening, yet compelling way, it is a movie showing the many facets of teenage friendship, pride, betrayal, ostracism, redemption, and genuine love. By then, Shoko herself is contemplating suicide due to her own social and emotional problems. But with redemption being offered, he learns sign language and unexpectedly reunites and befriends Shoko, who is still very lonely due to her hearing impairment and extreme shyness.

Having no plans for the future, Ishida even attempts suicide. He comes to the conclusion that there is really no point in having friends. This results in Ishida himself being bullied and ostracized well into high school. He is made the scapegoat, despite the varying levels of culpability that others have had in torturing her. Finally, when Shoko is forced to transfer to another school after enduring a period of the most cruel bullying, all of Ishida's friends, as well as the teachers, blame him for bullying her into leaving. Shoya Ishida, a former delinquent bullies the deaf girl, Shoko Nishimiya, with his friends joining in. Each teen reacts to the newcomer in a different way, including many varied and negative reactions and outcomes. The movie chronicles the emotional, social, and spiritual attributes that are manifested by a group of adolescent schoolmates in elementary school, especially as to how they relate to a hearing impaired girl that is introduced into their group.

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