Like a Dragon ~ Prologue ~ (龍が如く 〜序章〜, Ryū ga Gotoku ~ Joshō ~), also known as Like a Dragon: Prologue, is a 2006 Japanese crime drama original video film directed by Takeshi Miyasaka with Takashi Miike as executive director. It is based upon Toshihiro Nagoshi's 2005 video game Ryū ga Gotoku, known in the West as Yakuza, released on PlayStation 2. This drama stars puroresu champion Masakatsu Funaki in the title role and is a prequel to the inaugural installment of the Yakuza series, which was itself adapted by Takashi Miike as Like a Dragon: The Movie in 2007.