Colette Milliact has been rigorously educated for many years as the successor to the Earl's family.One day, her younger sister Liliane takes away both her fiance and her position as the Earl's successor.Colette despairs when she learns that everything she has endured for her sickly sister was planned by her.She decides to give up her position and sever all ties with her family.Colette leaves the Earl's family with nothing but the clothes on her back, but reaches her physical limit and collapses in the forest.However, a young man she has never met saves her."Colette, please marry me."Who is the young man——!?This is the story of a young lady who has had everything taken from her by her sister, who pretends to be sickly, until she finds happiness.