How do i progress Juliet? isn`t 13 lvl enough to just try to give her presents? I can`t understand how to progress anybody. The present icon is grey all the time
You need to have 3 stars with Juliet. To give girls presents, you'll have to first equip the gift in the inventory so that the gift icon is in the bottom right of the bag. The lack of stars on the gift option tells me that you haven't given her gifts yet at this stage. This gift giving is the core part of progressing with all the other girls too. Leveling her through the management is more so about unlocking new outfits and gaining higher profit every week