Nageki no Engagement Ring

Bianca, a PR maven, is asked by her ailing grandfather to find a bracelet he once owned. She happily discovers it at an auction, only to be outbid by Liev Dragunov, a mysterious and handsome Russian billionaire. When Bianca begs him for the bracelet, he tells her that he'll give it to her...but only if she'll pretend to be his fiancee and help him become a part of New York society! (Source: Renta!)