Pokemon Movie 20: Kimi ni Kimeta!
English name: Pokémon the Movie: I Choose You!
Genres: Action, Adventure, Comedy
Type: Movie, Episodes: 1
Aired: Jul 15, 2017
Studio: OLM
Source: Game
Rating: PG - Children
Synopsis:
The film's plot tells the story of how Satoshi and Pikachu came to know each other. Pikachu was not cooperative toward Satoshi, but Satoshi only wanted to be friends with Pikachu. On the day they set out from Masara Town, both of them saw a Houou flying and made a vow to someday go and meet it.

(Source: ANN, edited)