After you obtain the old coin near the fountain in town at the beginning of the game, go back and visit the goddess near the aunts house to unlock the fairy. Then you need to progress the story with the aunt until you max her hearts, then you get a item that allows you to use the stone tablet in the aunts shed, starting a long minigame. The reward at the end is the cupids arrow, which you can exchange for the costume.So I have two questions. where do you get the item that allows you to buy the cupid costume? and how to unlock the reverse cowgirl scene with owner of the bar?
The reverse cowgirl scene was removed for this version of the game according to the author.