Rock Garden of Ryoanji: Go to the front room.
Read the book on the table left of the main door. Learn about the different shapes of stones.
Soul stone - low vertical stone. Wide base and tapered top.
Body stone - tall vertical stone. Slightly bigger at base than top and is the tallest stone.
Heart stone - similar to a stepping stone.
Branching stone - has flat top wider than base.
Ox stone - reclining stone. One end is higher than other.
Place the stones: Go back under the bridge.
Look close at the stone slab on the left under the bridge. Place the stones on the etched slots based on their shape and info from the book.
Take the letter with markings. Read the letter of Kasumi to Maryanne.
Room 18: Go to cultural room #18. Use the door key Yumi threw in the pond to open the door.