The Saint’s Magic Power is Omnipotent (Manga) Vol. 8

A MISSION TO HEAL THE LAND On Earth, Sei was a twenty-something workaholic office worker, but in her new home of Salutania she’s become the Holy Saint destined to save the world from darkness.
Together with the handsome Captain Hawke and the magic-obsessed Magus Drewes, she’s traveled to the far-off Klausner territory to try and purify the miasma plaguing their once-fertile land. Their first journey into the cursed wood was foiled by a pack of deadly slime monsters, but with reinforcements from the royal capital, they’re prepared to return and make good on their quest.
Series Overview: 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?