chained

A character who has been bound with chains. This commonly involves shackles attached to the end of a chain, but may involve the chains directly being wrapped around a character.

Common themes involving this concept include BDSM (especially bondage), dungeons, sex dungeons, acts of imprisonment, and slave auctions or markets.

Related tags

bondage - Remember that chained is a bound tag. Use the bondage tag only when applicable.
bondage_gear - Restraints count as bondage gear only when involved in a bondage scene.
fully_bound - Chains are sometimes used in heavy, and restrictive bound/bondage scenarios.
prisoner
restraints