Naraku no Shiro Portable Ichiyanagi Nagomu, Nidome no Junan

After solving the Amagoushi no Yakata case, Ichiyanagi Nagomu receives an invitation from his friend Hiori to go to the Ruroi castle in Europe. The construction is hidden deep in the valley and the only way to enter is through a rope bridge. Nagomu learned of the history of the castle during dinner...