Shir's Clue: Big Castle

- Description: There is something written on the back side of Shir's Clue: "Big Castle - He used to talk about a big castle that he could not reach out to." ※ This is an essential Quest item that is one of 9 clues required to uncover the Great Adventurer's identity. Collect all of 9 clues and arrange them in the correct shape to combine them.[Additional in-game details]