The Mystery Bag is a special crate that is slowly filled with cosmetics from previous events. By spending 30 Oranges the player might receive one of old cosmetics, rather than needing to wait for the following year for a chance to receive the item. It should be noted, however, that the bag is filled at Fruitbat Factory's discretion and thus does not contain all of the old cosmetics and not all cosmetics are garunteed to head to the bag. Since 2017, there has been a notable decrease in cosmetics heading to the mystery bag. Lastly, Mystery bags do not contain fields, and as a result, event specific boards such as Sakura Smackdown currently have no method to unlock them. They also do not contain the special non-accessory costumes, thus the summer variant of Suguri, Hime, and Sora are not contained within the bag. It should also be noted, as well, that the bag may just give 15 oranges instead of a cosmetic and is not empty until its sold out in the shop.
- Rather strangely, the Christmas Color color pack for and is not in the mystery bag, as opposed to the rest of the cast.