The Pokemon Company has launched a Christmas Giveaway in Japan. From now until 25 December 2018, 23:59 hrs JPT, all you have to do is follow the Pokemon Information Bureau here, and retweet the below tweet.
A hundred winners will be selected from today until 25 December and the twitter page will generate a new post for you to retweet every day.
Since this is free, why not try out your luck and see if you win anything. Prizes only ship within Japan and winners will be notified on Twitter.
— 【公式】ポケモン情報局 (@poke_times) December 21, 2018