Lucky Emblems in Kingdom hearts 3 are "objects" that resemble Mickey Mouse's well known face&ears symbol. There are a total of 90 and are needed to unlock the Secret Ending, we need all the 90 Emblems in Beginner mode, 60 in Standard and 30 in Proud Mode in order to unlock it.

There are 9 Emblems in the Kingdom of Corona:

1- Climb on top of Rapunzel's tower and look down, there are some rocks close to the waterfall forming the Emblem.


2- From The Forest Marsh Save Point reach the western part of the map to find the Emblem on a boulder.


3- From the Forest Wildflower Clearing enter the cave and you'll find the Emblem on a big barrel.


4- Reach the Bridge right outside of The Kingdom and you'll see the Emblem to the right while facing the bridge .

5- From the previous one keep walking until you reach the city's gate, the Emblem is on the left of the gate near the man with the hat.


6- Go past the Plaza and take the left path, you'll see a closed wooden gate with the next Emblem on it.


7- Reach the docks and you'll see a small tower, the Emblem is near its door.


8- Keep walking East until you'll reach a small set of stairs and some barrels that resemble the Emblem.


9- The last one is on top of the Lighthouse, where' the fire should burn.


For a detailed walkthrough check the video below: