An enhancement function.
Players select a battle girl and equipment that can be enhanced. The equipment is indicated with a star(s) to the right of the equipment icon. If the equipment has an empty star(s), players can select it and choose sacrificial material that appears in a pop-up menu after selection. The sacrificial material offers varying amounts of enhancement points depending on rarity and whether the material is a component of a greater material. Once the enhancement meter is filled and the enhancement is a success then the empty star(s) turns blue. Once all stars turn blue no more enhancement can take place.