Nobody Knows (2004) - A Movie Critique

Nobody Knows (誰も知らない Dare mo Shiranai) is a 2004 Japanese drama film based on the 1988 event known as the "Affair of the four abandoned children of Sugamo".
The film is directed by Hirokazu Koreeda, and it stars actors Yūya Yagira, Ayu Kitaura, Hiei Kimura.
Nobody Knows tells the story of four children: Akira, Kyōko, Shigeru and Yuki, who are aged between five and twelve years old. They are half-siblings, with each of them having different fathers. Because three of the children are in the apartment illegally, they cannot go outside or be seen in the apartment, and do not attend school. Their mother leaves them alone for weeks, and finally does not return; they were forced to survive on their own. Over time, they can only rely on each other to face the multiple challenges in front of them.