Road to Becoming a Naruni Expert location (Forest of Giants)

Clue

"Hello! Kokomo! Would you help me?" Ujiuji, a Mokoko wearing a hat made out of leaves, beckoned me with a smile. "I want to be the best Naruni Expert out there! Will you help me find the one and only Naruni of my own, probably hiding somewhere in Tortoyk? The first Naruni is at the shipwreck in the Seaswept Woods!"

Story

Smiling merrily, Ujiuji lifted up a yellow Naruni. "There is no such thing as a strong or weak Naruni. These are all decided by Mokokos by their own standards. If you are to call yourself a true Naruni Expert, you have to be able to defeat any opponent with your favorite Naruni." Feeling its Mokoko's loving pets, the yellow Naruni made a long, delighted purring sound.