The Savior of the Heavenly Fowl.
Tasked by the Trader to deliver herbicide to a village, Naofumi's party discover the village overrun by a monstrous plant. They learn that the seed from the tomb is what Spear Hero Motoyasu used to end a local famine, but the sprouted plant came alive and began attacking the villagers. With Motoyasu gone, they turn to Naofumi, who defeats the monster plant and alters the seeds to be safe. With the villagers unable to pay him for the seeds, he takes them to the Trader for sale, who gives him a job to deliver merchandise to a hot springs' village. Staying the night, Raphtalia is jealous of Naofumi and Filo spending time together, but learns of a special gem a local bird collects...