Being somewhat familiar with bondage myself, I like the accurate depictions of it in this manga. How Kaoro ties someone up and then pretends to be absent for hours, whilst discreetly remaining nearby in case something goes wrong.
This is pretty much in line with the "safe, sane and consensual" rule practiced in BDSM.
I can't remember them agreeing on a safe word though... Or how to communicate this when one is unable to talk.
It gives an interesting look into the reasons why people practice bondage and submission. To push yourself beyond a barrier, to feel as if you were, and I quote from the manga, "a new person". The mutual trust involved and the importance of aftercare.
I hope this gets people interested in bdsm having seen how it is practiced safely and between consenting adults.
There are many inaccurate depictions around, most associating it with non-consensual sex. That, regardless of kink included, is always a bad thing. Unless, of course, you like it in the form of pre-agreed roleplay 😉
In short: Nana to Kaoru provides a more accurate and complete view into the world of bdsm than most works, and is therefore a rare gem, a 'must-read' for those who are curious about their kinks.