The illustration of this cute bird won't disappoint you: inside there are dove-shaped cookies. Each of those biscuits is sealed in a standardised bag package as an ancient way for food wrapping: easily handled by packaging machines and perfect to keep the products' aroma and taste as well as protecting them from germs, smell or humidity - nothing special in this common industrial technology. However, Japanese packaging designers have invented various modications for you to not recognise the bag package as such anymore; the results are much more attractive than a plastic sachet.
Reference:
http://www.morihachi.co.jp/index.html