Police are investigating Square Enix for allegedly using copyrighted SNK characters in the manga High Score Girl. Square Enix, which publishes the manga, says it didn't receive requests from SNK to halt publication and SNK says it never gave Square Enix permission to use its characters in the manga.
According to Sankei News, characters from SNK's The King of Fighters and Samurai Shodown games appear in the manga, which is set during the early 1990s, over 100 times.
High Score Girl is slated to be turned into an anime, and it wasn't until a production company contacted SNK about using characters and sound effects, that SNK apparently realised what had happened.
The police are conducting a search of Square Enix's headquarters and will question those connected to the manga.