Kazuki from Todou family and Chiharu his lover.
Kazuki went to America to learn how to become the next president of his family, in another company.
So it's a long distance love. It's hard for both of them. Chiharu went to America for a month, on behalf of his job (he's the actual president of Todou family, and was Kazuki tutor)
Very hot
Kemono series
Kemono no Marking