Forever Forest is a dark and maligned wood east of Toad Town in Paper Mario. Only specific pathways can be used to traverse the forest, as any deviation will lead back to the entrance. Each path is closed off by tree stumps with long, linear branches acting as turnstiles. A distinguishing feature in the nearby foliage, from the behavior of flowers (which resemble creeping dogwood flowers) or bioluminescent fungi to glowing eyes in a tree hollow, indicates the correct pathway. At the end of the wood stands Boo's Mansion, inhabited by Lady Bow and her Boo servants. Oaklie and a Bub-ulb are the sole other residents of the forest. Beyond the mansion leads to Gusty Gulch, home of a small Boo village and Tubba Blubba's Castle.
In Chapter 3, Mario and his partners must go through the forest to reach Boo's Mansion after receiving an invitation from Bootler. They explain to Oaklie that they are invited to Boo's Mansion, and Oaklie lets them proceed further. After finishing Chapter 3, Mario and his partners encounter Jr. Troopa who is lost in the forest on their way back to Toad Town. Jr. Troopa seems frightened at first, but becomes happy to fight Mario. After he is defeated, he will finally manage to find his way out of the forest.
A Magical Seed, an HP Plus badge, and an FP Plus badge can be found by exploring the forest. The Magical Seed is necessary for Mario to enter Flower Fields in Chapter 6. The in-game map description reads, "Sunshine barely reaches the floor of this dense forest. They say that Boo's Mansion is somewhere deep inside."
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