After debuting in first place last weekend , Chiikawa the Movie: The Secret of the Mermaid Island — the first anime feature film inspired by Nagano's web manga series — dropped to second place in its second weekend of July 31 to August 2, according to Kogyo Tsushinsha . It lost the top spot to Spider-Man: Brand New Day , which opened in Japan simultaneously with the United States and achieved an opening performance of 1.559 billion yen (9.9 million USD), marking the highest opening weekend earnings of any Spider-Man film released in Japan to date. Chiikawa the Movie earned 1.072 billion yen (6.8 million USD) from 766,000 admissions, which was down 52% from its opening weekend, and brought its ten-day cumulative total to 4.4 billion yen (28 million USD) from 3.05 million admissions. It has already become the second-highest-grossing Japanese animated film released in Japan this year, surpassing Doraemon: Nobita and the New Castle of the Undersea Devil with 4.27 billion yen (27.1 million USD). The highest-grossing Japanese animated film this year is still Detective Conan: Fallen Angel of the Highway , which has earned 13.68 billion yen (87.4 million USD) and ranks 27th in Japan's all-time box office ranking .