Note: items are listed in order of gameplay.
1st Location
After you came out of Underground Temple, next the Magic Mirror. See: Part 1: Reunion and Separation
2nd Location
Before fighting the boss Osric, there is Magic Mirror outside. Next to the Magic Mirror is a puzzle box. See: Part 2: The Keep
Solution: 6th, 1st, 4th
3rd Location
In a bucket on the second floor of the Keep. After you go up stairs, right next to you is a door to a room with a bucket hanging in the middle. Do not attack the bucket because it will cut the rope, the bucket will drop into a well along with the Power Jewel. See: Part 3: Trap, Trap, Trap!
4th Location
This one is a little bit complicated and confusing. It is where you climb down twice to pick up L. Crest Piece key item. Between the ladders where it prompts you if you want to go down again, stop there, turn around and go the other end to find another ladder which leads to the Power Jewel. See: Part 4: Rescuing the boy
5th Location
On the rooftop of a tower in the east area. The tower where you run upward in a spiral direction. See: Part 8: From West to East
1st Location
Right after you came out of the Underground Temple, you will notice a red treasure box behind leaves. See: Part 1: Reunion and Separation
2nd Location
This one can be easily missed if you are not careful enough. Right after you entered a door back to the main hall of the Keep on the 2nd floor, you will notice 2 soldiers are fighting 2 Zombie Warriors. Your job here is to rescue them by killing those 2 zombies with bow and arrows. Be careful though the soldiers may die if you take too long, and after killing the zombies, you have to wait until the soldiers drop items (yes, I lost them because I enter the door too early). Next, walk all the way back to the main hall to pick them up.
3rd Location
When you are in control of Kaede for the first time, your first objective to pick up Wooden Gear from a soldier in the west area. You will have to run pass an archery range and a bamboo garden in order to get there. The Magic Jewel in a puzzle box near the Wooden Gear; I mean it is very obvious if you don't see the box. See: Part 6: Found the Princess
Solution: 5th, 7th, 2nd
4th Location
it is in a treasure box near a ladder that leads to the rooftop of the tower where you run upward in a spiral direction. See: Part 8: From West to East
5th Location
In a storage house near the waterfall. See: Part 8: From West to East
Solution: 3rd, 6th