Thief Girls Quartet is a story about phantom thief girls who steal precious treasures hidden within a giant tower by an evil merchant. The phantom thief girls can move freely using wires. Let's all find the treasure that sleeps at the top of the tower!World SettingThe time is 19th century London, in a world slightly different from ours. On the town's bulletin board, there are words saying "Mysterious giant tower with hidden national treasures found." In the "Forest of Farewells," where the fog never clears throughout the year, a huge tower reaching the heavens was discovered. It was said that precious treasures were hidden there by an evil merchant. With excitement in their hearts, the girls head towards the giant tower in search of the treasure...Character IntroductionThere are four protagonists in this game. The protagonist girls appear ordinary during the day, but at night, they transform into phantom thief girls and steal