I'd like to recommend a series.

[AG31]

This series of 6 stories was published here in 2018. I'm not sure how easy it would be to find by happenstance. It was recommended to me and it's just the kind of story I like. A strong man surrenders with dignity to pain and/or sexual humiliation.

If you like this and know of others like it, could you mention them here?

https://www.literotica.com/stories/memberpage.php?uid=4242639&page=submissions