Synopsis: You're the Fiancé!

Mei Sahara, a hopeful and innocent individual, is taken aback upon learning that she has been betrothed to a stranger named Hijiri Kamijo, a triumphant and attractive CEO, when she turns twenty. Despite appearing to be the perfect fairy tale prince charming, Mei must confront the predicament of being with him as he endeavors to take all of her "firsts" away.