Datsuraku Reijou no Kekkon

Rokumeikan Women's University is a rich girls' university full of extremely wealthy girls whose parents can easily buy them apartments near the university. The story unfolds when three girls, Andou, Bessho, and Chikara, who had no common ground other than attending the same women's university meet. Andou is a soft and fluffy beauty who is rumored to be a bitch, Chikara is a solitary cool beauty, and Bessho works at a bistro near the university.

(Source: Natalie, translated and edited)