Also known as: フラット貞操帯
A flat variant of a Small Chastity Cage where the penis is squished flat, usually with holes. Not to be confused with a Nub Chastity Cage.
It is difficult to distinguish between this tag and Inverted Chastity Cage tag as they appear very similar unless otherwise explicitly shown that it is an Inverted Chastity Cage, to be safe, simply tag Flat Chastity Cage for those posts.
If they are wearing a Strap-On along with their Chastity Cage or a Dildo attached directly to their chastity cage, please tag Sex Toy Replacing Penis.
If Cum or Precum is coming out of the Chastity Cage, please tag Chastity Cage Emission.