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!
he was holding the glass pen 
he used to draw his plans."
".كان ممسكًا بالقلم الزّجاجيّ الّذي استخدمه لرسم تصاميمه
seine Lieblingsglasfeder in der Hand,
mit der er Pläne entwarf.“
con la que hacía sus planos
hasta su último aliento".
en tenant son stylo en verre préféré
jusqu’à son dernier souffle ».
la sua mano reggeva la penna di vetro
 che usava per disegnare le sue idee".
ele continuou segurando a caneta de vidro
com a qual desenhava seus modelos."
он держал стеклянную ручку,
которой рисовал чертежи».