Way I see it, if Rissa is her doting mom or big sister then Shiori is the slightly crazy cool aunt or cousin who takes her along on awesome if questionable adventures 😎 But yeah those two definitely share some gremlin wavelengths lel
Fuwawa is probably taking notes. She probably can expose her treasure even more after she sees Nerissa xD Biboo praised the moon and then bonked us, then Shiori sat on us... what a day