|Season 2, Episode 51|
|Air date||March 28, 2016|
Seek Diamonds! is the 51st and finale episode of the Diamond no Ace Anime series Season 2. The episode follows the storyline from chapter 409 to chapter 412 of the manga and includes some parts of the three epilogue chapters.
With Yakushi failing to score off Furuya, Seidou wins. The third years congratulate the team and Kataoka is brought to tears. Meanwhile, Sawamura challenges Furuya for the ace number.
Furuya cleanly closes out the match before Raichi gets to bat ending the match with Seidou's win. At the lineup, Sanada realizes Miyuki has been injured all the while and feels frustrated that they didn't notice. Mishima apologizes to Raichi for not getting the fourth batter the chance to bat. Raichi smiles saying that he wanted to face Furuya and didn't want the match to end bringing Mishima to tears.
Behind the dugout, Kataoka apologizes to Miyuki for prioritizing the win thus letting Miyuki play, despite of an initial plan of switching Miyuki out the last inning. Miyuki however, is happy that he was able to help the team. He is then sent to the hospital, accompanied by Zono, Kuramochi and Rei.
Out of the stadium, the third years congratulate the team. Kataoka is brought to tears as he tells the seniors that they're a part of the reason that they won and thanks them. Meanwhile, Haruichi, Furuya and Sawamura leave the stadium later than their teammates. As they near the exit, Sawamura tells Furuya that he's happy he came to Seidou as well and that he'll steal the ace number from him. Furuya smiles in response and says that he won't lose.