India, Aug. 13 -- McDonald's Japan has issued an apology after the fast food giant's campaign that gave away limited-edition Pokemon cards with "Happy Meals" triggered long queues and social media outrage about food waste across the country.

The 'little monsters' cards are extremely popular among both children and adult superfans and collectors, with some going as high as millions of dollars in value. Billions of 'little monsters' cards are printed every year to keep up with the demand.

The frenzy can be understood with a simple example that these cards have triggered physical fights and burglaries in the shops that sell them in Japan, an extremely low-crime country.

McDonald's conceded there were some instances of "resale-driven mass ...