In order to begin this sidequest, you need to be on Night at the Library and have completed 012 Fai Do, the Downbeat Armorer and 004 A Favor for Nu Bi. Once you’ve done that, head to Evermore and enter the actual town to see that Nu Bi has a quest for you. He wants you to make a Hybrid Bow with a grade of at least five. Grade is the number in the lower left corner of the stats screen on equipment. To make a Hybrid Bow, you need to research Level 1 Ranged Weapon Development at the Weapon Workshop and the items required are 2 Lumpen Lumbers, 2 High Tide Shells, and a single Fledgling Feather.

The Hybrid Bow starts out with a grade of two and in order to increase that, you’ll need to add catalysts to it. A single catalyst will add a grade to the weapon and in the case of the Hybrid Bow, you will need Solid Lumbers (you can get these from Swift Solutions or by leveling your Budding Lumberyard to 2). You simply need to add three Solid Lumbers to reach a grade of five, so do that and create the weapon. When you’ve finished, speak to Nu Bi again to show him the bow and finish the quest.