No Forests for Humans is a sub-quest in World 1 - Kanterbury Forest.
Quest Gameplay
There is a black-haired poacher south of the Healing Altar in 1-3 In the Forest. Talking to him gives the player the quest and access to the Guardian's Forest.
As the player enters the stage, they can see the poacher to the right but cannot interact with him yet. On the next screen, the player can talk to the people that are happily bouncing around, who tell the player about their appreciation of the forest. Continuing north, the player will come across Elf Archer Leah, who will stop the player in their tracks and tell them that they are not allowed into the forest. Telling her that the player is "just a tourist" simply ends the conversation, so the player has to fight her.
Once the player defeats Leah, the player has the choice of either sparing her or killing her. If the player spares her, she asks the player to kick out the poacher who sent the player there. The player can do this either by bribing him 
1000 Gold to leave, resulting in him leaving the forest, or fighting him, which, upon the player's victory, results in his friend dragging him off. The player can then return to Leah, and she will reward the player, completing the quest.
Alternatively, if the player kills Leah, the player can go to the poacher, who will also reward the player, completing the quest.