By law, the Japanese school year begins on April 1 and ends on March 31 of the following year.
Elementary school in Japan, known as “shogakko”, consists of six grades.
Children start first grade in April at the age of six. They move up one grade each year, entering sixth grade in April at age eleven and graduating the following March at age twelve.
This story follows the common academic calendar in Japan, where the first term of the school year typically begins in the second week of April after spring break, and the graduation ceremony is held in late March of the following year.
That said, the story itself is entirely fictional.
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