Hinako ties her mummified sub against a hanger rack holding a bunch of her BDSM toys. Perfectly mummified in grey, her sub blends in with his surroundings, practically becoming indistinguishable from one of Hinako’s other toys. He pretty much IS one of Hinako’s toys.
Lastly, because he looked so pitiful like that, Hinako let him play with the Hitachi a bit.