Can any of you recommend me some of these kind of yaoi? An example would be Koi wa Keiyaku no Atode. Not that I want the business man buying the boy but just that age range. I would like the hs boy to be the uke too btw. Thanks!!!

I haven't read the manga you talked about, but the plot and age difference remind me of the first story in Mae yori mo Dare yori mo. I hope you'll like it.
Maybe you'll find something interesting in the Older Seme Younger Uke category. 😉

Dekiru Otoko
Hidoi Otoko.
Love Mode
Mijuku na Kareshi

Also try searching for "Yaoi" genre and different combinations of categories "Age Gap", "Businessman", and "Student/s"

Bump!