The Rising of the Shield Hero: Season 1, Episode 7

1 - 7: The Savior of the Heavenly Fowl

After hearing of a village that's in immediate need of herbicide, Naofumi and his party head there to do business. The village has been overrun by plants that have turned into monsters, and its residents were forced to abandon it. These plants can even take root in humans, and apparently Motoyasu is the one who released them into the wild.