Obi Island Seven Letters Task Guide: First, go to the furniture store to find Panpan and talk to him to get the task. A blue mission marker will appear in the upper right corner of the screen. Then, find the following seven letters according to the requirements. Remember the locations of these seven letters as Panpan will ask you to find them again.
w is on the door of the farm cottage
a is above the door of the Greenwood Forest cabin.