I was following a light BDSM manga set high-school with the glasses wearing nerd discovering the fetish of the cute school goddess and agrees to help her. Not Nana to Kaoru or off-shoots of it. I remember that she asks him to 'Mess her up' if that helps.
Last year I read a light BDSM manga set high-school with the glasses wearing nerd discovering the fetish of the cute school goddess and agrees to help her. Not Nana to Kaoru or off-shoots of it. A little suggestive but no sex or nudity.