Erza Scarlet (the pride of Fairy Tail guild) asks her master why she is dressed in this lewd combination of top bikini for her big tits and a maid custome for her lower body? The answer is pretty easy, since they keep breaking things somebody has to pay the bill. So therefor the guild’s debt has skyrocketed and so Natsu is working at the mine, Gray is working at the port and Lucy is working at the inn. That’s why the master expect Erza also to do her “part”
Once the Fairy Tail slut realizes what she is supposed to do here, she tries to escape, however nobody told her that master Makarov already put something in her drink to make Erza a mere sex puppet.