Werewolf: the Apocalypse" character profile from the old White Wolf website, found in the White Wolf wiki. Probable case of author's barely disguised fetish, with the details emphasized in the description speaking
File:Checking BDSM Collar Strength.png - Wikipedia
You. Me. Ride This Crazy Train - Adventures and Observations on The GO: Best transit sign ever
List of universities with BDSM clubs : r/wikipedia
Leather subculture - Wikipedia
File:Simple BDSM Cuffs.png - Wikipedia
Shibari: pushing boundaries in the ancient Japanese practice of knot tying | Stage | The Guardian
File:Bdsm old guard couple.jpg - Wikipedia
Blindfold - Wikipedia
BDSM: The Ultimate Handbook for the Dom and Sub. Training for Pleasure: Training for Pleasure (Pain and Pleasure): Welps, Richard: 9781720691952: Amazon.com: Books