This game has unused graphics.
An arcade beat-'em-up from the developers of Double Dragon 3: The Rosetta Stone... not exactly a good pedigree. Features a pair of Jackie Chan twins, Arnold Schwarzenegger and Jagi from Fist of the North Star.
While Silent Dragon was published by Taito, the Technos logo can be found at the bottom of the game's graphic tiles. East Technology previously developed the arcade version of Double Dragon 3, so it's possible that Technos may had cooperated with the development of Silent Dragon at some point if this logo is not just some leftover from Double Dragon 3.
Joe's girlfriend, Catherine, tied up from a ceiling. Presumably she would've been shown in this matter during the final boss battle.