
I think the age gap isn't too bad I mean not like she's a married woman and he's a high school kid. He's in college right so he's technically an adult and their relationship is pretty okay so far. And they love each other. So as long as the shoe fits.
This just my opinion though, if you think against it it's okay I don't mind.
I'm glad that they're not including other people that would have sucked. The BDSM is hot ngl. Gyuwon is such a sub getting turned on by the idea of others watching him.