Where is the archer's tutor?

Ruby, Katie and Aga, our queen of Los Angeles, became three spear hunters. You can find them at the Iron Wall Rose Tavern in the Oath Fortress.

Katie is a lovely musket cat (much more advanced than Hatch) and teaches us how to carry out tactical actions and supplies in battle.

Ruby is the legendary genius doctor, the creator of Katie's wisdom (and Icarus CP? ), teach us how to use a hunting shovel to pour fire in battle. At the same time, it can also make special ammunition for us.