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!
The stupidest-seeming one of 
the lot is the real thing.
.صاحب أغبى مظهر بين الجميع هو الشّخص الحقيقيّ
El real es que tiene más cara de idiota.
C’est celui qui a l’air le plus idiot.
Era quello con l'aspetto
 più stupido del gruppo, no?
O verdadeiro era o
com mais cara de bobo.
Кто глупее выглядит — тот и настоящий.