Description:
 
The Pikachu Nebukuro Collection (ピカチュウねぶくろコレクション) was a collection of plushies, keychains, and other accessories released between 2015-2016.

This keychain was from the Pokemon Pikachu Nebukuro Collection as the G賞 (Shō) which are rubber keychains with Pikachu in different Pokemon Nebukuro, or Sleeping Bags.
 
The B, C, D Prizes from the 2013 Ichiban Kuji Pokemon Best Wishes Prize Lottery that was released in Japan. 
 
Released in Japan: January, 2015