Shadow of the Bat

Got this vintage blouse for 370Ft, (almost free) and beat this, a Batman shadow was included in the price! Amazing, but confusing they didn't mention it in the store so now I wonder, is this my Batman outfit? Will I save the world? I did go to the gym today so maybe the shadow is a sign that I will be super muscular in the near future.

Now I'm loading with some sugar and a book in case I need to fly out on a mission in the night.