Upon receiving an invitation to a treasure hunt from the famous mysterious item artist Reinette, Ramune and Kuro visit Reinette's mansion. There they encounter Ayame and Nico, who have also come to participate in the treasure hunt. However, when Ramune sees the man with them, his expression freezes, and he attempts to flee the scene. That man is Ramune's master Momiji!
If the inconspicuous glass pen at the end 
of the labyrinth is the "correct" answer,
إن كان القلم الزّجاجيّ غير الملحوظ 
،"في نهاية المتاهة هو الإجابة "الصّحيحة
Wenn die unauffällige Glasfeder
am Ende des Labyrinths „richtig“ war,
Si una pluma discreta al final
del laberinto es la respuesta correcta,
Si la bonne réponse est
ce stylo de verre au bout du labyrinthe,
Se quella penna di vetro che non dava nell'occhio
 alla fine del labirinto è la risposta "corretta",
Se a resposta "correta" era uma discreta
caneta de vidro no fim do labirinto,
Если неприметная стеклянная ручка в
конце лабиринта — «правильный» ответ,