[2] Starred by Takako Matsu as Yuko, a junior high-school teacher who's trying to solve the death of her daughter under mysterious circumstances.

The film was a commercial success, receiving widespread critical acclaim with praise towards its direction, screenplay, cinematography, editing, characters' study and Matsu's lead performance.

[3] Junior high school teacher Yuko Moriguchi (Takako Matsu) announces to her undisciplined, disrespectful class that she will resign before spring break.

Having revealed their identities, Yuko explains that because the killers, as minors, are protected by the Juvenile Law of 1947, turning them in wouldn't make a difference.

Shuya's first public invention, an electric anti-mugger wallet, earned him a science fair award but failed to make headlines as the media was distracted by the "Lunacy Murder" case.

Classmate Mizuki Kitahara tells Shuya that she believes Yuko lied about the contaminated milk as it was an implausible method of transmission.

Soon after the film had started showing in 266 cinemas, it had already grossed ¥269,835,200 with 194,893 audiences, breaking the record previously held by I Give My First Love to You.

[1] The film received a widespread positive response globally, with critics praising a variety of factors including good adaptation from the book, the director's style, and the acting, particularly by the child actors.

[7] One notable negative review came from Mark Kermode of the BBC, who said that its style made it "virtually impenetrable on an emotional level".

[8] In 2022, American filmmaker Michael Mann listed the film in his top ten favorites for the Sight and Sound poll.