College student Kurumi Fukuga finally makes her long-awaited debut in FX (foreign exchange margin trading). Her goal is to win back the 20 million yen her late mother lost through FX. "I'll earn it back easy!" she boasts boldly, plunging headlong into a world where one can fall from heaven to hell at any moment. Unrealized losses, forced liquidations, feelings that won't settle... Even so, she still wants to buy, sell, and make money! Can Kurumi survive in this crazy world?