Seijo no Maryoku wa Bannou desu

A 20-year-old office worker named Sei is transported to a new world through a ritual intended to summon a "Saint" to defeat dark magic. Instead of one person, two are brought over, and the second girl is favored over Sei. Unbothered by this, Sei leaves the royal palace and begins using her magic to create potions and cosmetics. Her business thrives, and she starts to enjoy her new life, as long as her status as a Saint does not cause problems later.