By its seventh weekend, the film had sold 6.71 million tickets and grossed ¥8,575,715,400 ( $78.25 million) in Japan. In five weeks, The Fist of Blue Sapphire grossed ¥7,951,036,700 ( $72.26 million) in Japan. In its fifth week, Detective Conan was dethroned by Detective Pikachu at the Japanese box office. It dropped to number two in its third week, dethroned by new release Avengers: Endgame, before Detective Conan regained the top spot in its fourth week, beating Avengers: Endgame and new release Detective Pikachu. The film remained at the top in its second weekend, selling 678,000 tickets and earning ¥886 million, for a two-week total of ¥3.58 billion ( $32.84 million) at the box office. The film topped the Japanese box office and grossed ¥1.88 billion in its opening weekend, setting a new franchise record. In Japan, the film sold 313,724 tickets and earned ¥422,465,000 on its opening day. Yūki Kaji and Dominic Allen (English Stunt) Leon Lowe, a detective and behavioural psychologist from Singapore, is also searching for the legendary secret treasure buried in the seabed and is in rivalry with Conan and Kid. During his intrusion into the premises, he is trapped and comes face to face with Makoto. Disguised as Shinichi Kudo, Kaitō Kid finally manages to get information about the sapphire that is kept in the underground vault of a mansion. Ran, who does not recognize him, asks him his name and Conan improvises the name of "Arthur Hirai". There, Conan must obey him if he wants to return to Japan he has his glasses, wristwatch and clothes confiscated, among other things, and must conceal his real identity. However, Kaitō Kid wants to use him to get the sapphire and kidnaps him to take him to the city-state. Conan is stuck in Japan as he does not possess a passport. Still in Singapore, Makoto was in the midst of participating in a martial arts tournament where he is joined by Ran and Sonoko to encourage him. A local millionaire plots to recover it, and when it reappears at a Singaporean hotel exhibit, a murder takes place and a calling card of Kaitō Kid is found at the scene.
The world's largest blue sapphire, the 'Blue Sapphire Fist', is said to have sunk when a pirate ship sank in the late 19th century off the coast of Singapore.