https://en.m.wikipedia.org/wiki/Nana_to_Kaoru
I was searching for non-porn BDSM anime the other day and found this. I'd guess what qualifies as porn can be a bit subjective, for me this wasn't. Nana to Kaoru is primarily S&M but does contain elements of bondage. I found myself hooked to the live action adaptation, thoroughly enjoyed it, made me cry lol, and so found it worth sharing. On the other hand, the reviews suggest it is cringy, and yes the male protagonist could have been depicted as less of a pervert, but I enjoyed the aspects they were getting at
![Smile :)](./images/smilies/icon_e_smile.gif)