Puzzle Hero

Same series

• Puzzle Iroiro: Gekkan Crossword House Vol.1 (2009)
• Puzzle Iroiro: Gekkan Crossword House Vol.2 (2009)
• Puzzle Iroiro: Gekkan Crossword House Vol.3 (2009)
• Puzzle Iroiro: Gekkan Crossword House Vol.4 (2009)