Missing Rings in Box

[Arcanine]

I believe the "Ring Box of Curan" is missing some of these characters' ring or are misplaced in another box.
I have not seen Folcore rings drop in over 500 boxes

Folcore Stance
Calyspo
Bolero
Ranchera
Cancion
Climax

Innocentio Stance
Exclusion
Satisfy
Restore
Redemption
Mass Ressurection

Ancient Tactics Stance

 

[Elite_Le_Nub]

100% these drop:
Calyspo
Bolero
Ranchera

i got them from boxes

 

[IamTechknow]

Ring Box of Curan only gives assistance rings. At least for Folcore stance, it is a magical ATK stance so its rings actually appear in the Ring Box of Chester.

Also I can confirm myself I have received a Calypso, Bolero, and Cancion ring from the Ring Box of Chester.