C823 Information Source
Watanabe Miyoko had always been investigating the pattern mark, and only found some clues previously. She pointed this pattern mark towards the Iga Family in the history of Japan.
What made Watanabe Miyoko sure was that she found an ancient painting tonight. The painting was stored in a certain Japanese museum and what Watanabe Miyoko saw was a brochure of the museum. On the brochure