Starting on June 11th, 2021, McDonald's Japan will be offering a new Happy Set featuring Pikachu toys. There will be 3 distribution periods, each offering different toys during the first two periods while the 3rd period will offer all the toys at random until supplies last.

Week 1: June 11th, 2021 until June 17th, 2021

Pikachu Balance Challenge (ピカチュウ バランスチャレンジ)
Pikachu Dash (ピカチュウ ダッシュ)
Pikachu Dunk (ピカチュウ ダンク)

Week 2: June 18th, 2021 until June 24th, 2021

Get Pikachu! Ball Attack (ピカチュウゲット！ボールアタック)
Pikachu Trick Trick Throw (ピカチュウ トリックわなげ)
Pikachu Rock-Paper-Scissors Attack (ピカチュウ じゃんけんアタック)


On June 12th and 13th, 2021, they will also be distributing 4 different Pikachu Pokémon MEZASTAR tags.

Source: https://www.mcdonalds.co.jp/family/happyset/new01/

YouTube Clip - Happy Set Info

Source: https://www.youtube.com/watch?v=BL6bxoeE_dU

YouTube Clip - Happy Set Commercial

Source: https://www.youtube.com/watch?v=Hby723d8MmY