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As the president of one of his father Gonzō's corporations, Kyōsuke employs brutal-and often illegal-business tactics in order to pay off a massive debt accruing intense interest. Though he acts kind and understanding in most social situations, this persona is a pretense used to hide his work as a highly intelligent and ruthless businessman. The player assumes the role of Kyōsuke Azai ( 浅井京介, Azai Kyōsuke), the protagonist of The Devil on G-String and adopted son of a powerful yakuza boss. There are four different routes in total. Depending on what is chosen, the plot may progress in a specific direction. The player is occasionally presented with choices to determine the direction of the game.
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The text being displayed represents the thoughts of the characters or the dialogue between them.
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Much of the gameplay in The Devil on G-String requires little interaction from the player, because the majority of the time is spent reading the text that appears on the game's screen. A scene in The Devil on G-String depicting Kyōsuke talking to Yuki (left) and Mizuha (right).
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