Not too long ago, we detailed a campaign for Pokemon Center/Store locations in Japan. The campaign gave out Detective Pikachu 'Furrowed Brow' stickers to customers who showed off their Detective Pikachu ticket stubs to staff at the locations. Turns out that campaign was a major success, as all stickers are out of stock now! The good news is that a stock replenishment is on the way, and will be in stores starting June 1st, 2019.
If only I had a sticker to show my disappoinment