Lily's Upgrade Shop
You can upgrade various equipment using other pieces of equipment. You can put up to five items that will be consumed as materials for upgrading your gear. Each item has a specific number of upgrade points that will contribute to the gauge to the upper left. The item's upgrade level determines how many times it can be upgraded. Higher quality items used as materials will add more points to the gauge. After successfully upgrading your gear, it will earn one point that you can assign to any of the available stats to increase it. Each item has their own upgrade level limit.
Griffin's Relic Shop
Here you can shop for various Relics to augment your character's strengths. Relics with additional bonus effects must be sought after. The shop's inventory restocks after a certain amount of time so check often.
Bane's Weapon Shop
As the name implies, this is where you'll find weapons for your character. Always go for the more expensive ones if you can afford them, with better stats and better yet, bonus effects.