|Overworld Theme||Flight of the Bamboo Cutter ~ Lunatic Princess|
|Wild Battle Theme||Deaf To All But The Song|
|Map Connections||Outside: Bamboo Forest of the Lost|
Eientei, located within the Bamboo Forest of the Lost, is where Eirin Yagokoro and various other Lunarians are located. It is here that the player will receive the Woodcutter Doll, which will allow them to progress through the rest of the game. Speaking to Reisen after fighting her will allow the player to heal their party.
When the player first arrives at Eientei, Tewi and Reisen will be waiting outside. Reisen says she will go inform Eirin of your arrival and asks Tewi to give the player a tour. Instead of giving you a tour, Tewi first challenges you to a battle. After losing, Tewi invites you inside and says she never intended to give the player a tour. Once the player enters Eientei, they will meet with Reisen and Eirin in her office. Eirin will introduce herself then ask they player to battle Reisen in order to test their strength. After defeating Reisen, Eirin will ask the player to help settle a dispute between Kaguya and Mokou. When the player goes to Kaguya's room, they find her and Mokou ready to fight each other. Eirin asks you to stop Mokou and then the player battles her. Mokou is irritated to be interrupted but fights you nevertheless. After losing, Mokou apologizes and leaves Eientei. Eirin thanks you for the help and gives you the Woodcutter Doll. Finally, Eirin offers to have a rabbit guide the player back through the Bamboo Forest.
| Lucky Rabbit Tewi
||Normal Tewi (Lv.20), Normal Udonge (Lv.20), Normal Tewi (Lv.22)|
| Moon Rabbit - Reisen
|Normal Seiran (Lv.20), Normal Ringo (Lv.20), Normal Udonge (Lv. 24)|
| Hourai Individual - Mokou
|Normal Keine (Lv.26), Normal Sumireko (Lv.26), Normal Mokou (Lv.28)|
| Moon Princess Kaguya
|Normal Tewi (Lv.28), Normal Udonge (Lv.28), Power Eirin (Lv.30), Power Kaguya (Lv.30)|