The Saint's Magic Power is Omnipotent, Volume 1

Living the workaholic life in her mid-20s, Sei never expected she'd be summoned to another world, let alone obtain the power of a living Saint. And she especially didn't expect to be totally ignored by the locals! While the kingdom desperately needs a hero, it turns out Sei was just the backup option. Left alone, she explores her newfound powers at the royal Research Institute, unraveling the mysteries of magic potions. As she helps the sick and the dying, her talents reveal themselves: might Sei be the Saint this world needs after all?