I found a bug, somehow I have -3 trust potions. I have -3600 Jewels. If you talk to Mirajane she just takes the 6k and a potion regardless of whether or not you have it. Same with the events where you put a potion in someone's drink, like with the grape gathering for Cana.
Are you able to share what this project is? I'm new to this so I'll finish this first of course, but if their project isn't done yet I'd probably like to check that out while I wait.
