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!

Synopsis

She tried her best for her sister's sake, but that life is now behind her. Once Sherry's little sister and only living family Irene was chosen as a Saintess, Sherry was thrust into life as a "sourcer," worked to the bone as a special gatherer learned in extracting herbs and magistone necessary for modern magic and medicine. Now adults, Irene's recent betrothal leads to a division in their relationship: "I despise you. Never appear before me again." Upon hearing this, Sherry resolves to make a better life in a new land, and encounters the dashing magician Aslan, who recognizes her potential and vows to treat her with the dignity she deserves. If she accepts his offer to be his personal sourcer, how does Sherry, used to the austere life of a sourcer, learn to live in the luxury provided by the prince-like Aslan? More than that, how does she deal with this new feeling in her chest?! Could it be...?