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!
Their voices are identical, but they can't 
copy the sound of their heartbeats.
.أصواتهم متشابهة، لكن لا يمكنهم نسخ صوت دقّات قلبهما
Die Stimmen sind zwar identisch,
Sus voces son idénticas,
pero no pueden copiar sus latidos.
Leur voix est identique,
Le voci saranno identiche, 
ma non possono copiare il suono del suo cuore.
A voz é idêntica, mas não é possível
copiar até os batimentos cardíacos.
Голоса у них одинаковые,
но звук сердцебиения не скопировать.