Tokyo Metro This is the puzzle-solving event "Invitation to the Underground Mystery 2025"! ★ This is a complete set of unused official kits. The puzzle-solving kit itself is unused. The problem booklet is unopened. Please refrain from purchasing if you are concerned about minor scratches, as it has been stored at home. ・For those participating in groups (One person can purchase the kit to proceed with the puzzle-solving) ・Recommended for advance preparation for those who are not confident in solving it in one day, as this time it's also quite voluminous! ▪️The URL for the designated date is not included. You cannot input answers, check the final question, or view the ending page. ▼Details https://realdgame.jp/s/chikanazo2025/index.html ▪️Event period: October 1, 2025 - March 31, 2026 ★ Due to size constraints, we plan to fold the clear file for shipping. This will not affect the puzzle-solving. ▪️The included 24-hour ticket is a prohibited item for sale and is not included. Please purchase a separate Tokyo Metro 24-hour ticket (¥700) at the station. Puzzle-solving Scrap SCRAP