Seijou no Ane desu ga, Imouto no Tame no Tokushu Masekiya Tokushu Yakusou no Saishu wo Yametara, Ringoku no Majutsushi-sama no Moto de Shiawase ni narimashita!

I tried hard for my sister, but big sister is quitting now!" Sherry, whose only blood relative, her sister, was chosen as the Saint, worked hard to become a dedicated gatherer so she could stay with her. She tirelessly searched for special medicinal herbs and special magic stones for her sister's sake, but after her sister came of age and her engagement was decided, she was told, "I hate you. Get out of my sight," causing Sherry to decide to leave the kingdom.

"If you'll be my exclusive attendant, I will cherish you." Then, after being passionately sought after by the super handsome magician Aslan, whom she met on the road, Sherry's life of enduring hardship takes a complete turn!? While bewildered by her princess-like environment, Sherry's romantic feelings begin to bud for Aslan, who cherishes her... "I—I can be happy!