|Season 1, Episode 2|
|Air date||October 13, 2013|
|Written by||Takeshi Konuta|
|Directed by||Mitsuyuki Masuhara|
The One Pitch
Not Qualified To Be a Pitcher?
Partner (Aibō, 相棒) is the 2nd episode of the Diamond no Ace Anime series. It was aired on October 13, 2013. Episode 2 follows the storyline from chapter 2 to 3.
With Miyuki's help, Sawamura defeats Azuma. Sawamura is totally overwhelmed by this experience, but back in his hometown he feels guilty towards his former teammates, but in the end he decides to take on his new journey.
Because of Miyuki's twisted and sarcastic personality, Sawamura is a little suspicious around him. But after Miyuki makes clear that he is his partner and wants to slay that monster alias Azuma together with him, he gets Sawamura's trust and they form a team.Miyuki finds out that Sawamura's talent is a natural breaking pitch that changes its course at random. With Miyuki's help, Sawamura defeats Azuma in the end.
Sawamura is totally overwhelmed by this experience, but back in his hometown he feels guilty towards his former teammates.He needs some time, the encouragements of his friends and a punch from his grandfather to realize, that it’s not a betrayal of his friends to leave his hometown to join Seidou to get better. So he decides to take on his new journey.
At the day of his departure, after Sawamura gets on the train, his friends reveal that they really loved to play with Sawamura and secretly wanted him to stay and play again with them together. They never told him about their reluctant feelings before – because they knew that Sawamura wouldn't go otherwise. It's a tearful farewell.
Characters in italic are only seen briefly and have yet to make a proper appearance.