Fics like Summer and Summer

Seidou made their way up to the nation’s summit, but defending a title is different to chasing one. Eijun, heading into his third year, and Miyuki, going for the NPB, strive to continue Seidou’s legacy with Okumura’s (sometimes reluctant) help. It was only fair, Kazuya supposed, that after Sawamura gave him Koshien’s wide, summer sky, he should send the southpaw a galaxy in his return toss. — Set after the end of the series. A ‘What If + Ace of Diamond Act III’ story started before the release of 308.5, the extra manga chapter.

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1. Reluctant Revelations by corteae (ダイヤのA | Daiya no A | Ace of Diamond)
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3. Harvest by Vixenfur (ダイヤのA | Daiya no A | Ace of Diamond)
4. What's Left Unspoken by Teyova (ダイヤのA | Daiya no A | Ace of Diamond)
5. scar tissue around your heart by bimmyou (ダイヤのA | Daiya no A | Ace of Diamond)
6. battery partners by pmin_chi (ダイヤのA | Daiya no A | Ace of Diamond)
7. I Ship It by rekamohcs (ダイヤのA | Daiya no A | Ace of Diamond)
8. Jackpot by Vixenfur (ダイヤのA | Daiya no A | Ace of Diamond)
9. Unexpected by Poof_ImGone (ダイヤのA | Daiya no A | Ace of Diamond)
10. spyglass in reverse by harmony (ダイヤのA | Daiya no A | Ace of Diamond)
11. Take A Hint by PiningTsukkiEnthusiast (ダイヤのA | Daiya no A | Ace of Diamond)
12. Restart by Beginner9to5 (ダイヤのA | Daiya no A | Ace of Diamond)
13. Hint Taken by TinfoilHat (ダイヤのA | Daiya no A | Ace of Diamond)
14. Sugar Rush by oiivkawa (ダイヤのA | Daiya no A | Ace of Diamond)
15. A Sawamura Family Affair by corteae (Haikyuu!!, ダイヤのA | Daiya no A | Ace of Diamond)
16. Perfect Pitch by miyassam (ダイヤのA | Daiya no A | Ace of Diamond)
17. All Bets Lost by Jangpoo (ダイヤのA | Daiya no A | Ace of Diamond)
18. Pom-Pom Pink by frymyrisole (ダイヤのA | Daiya no A | Ace of Diamond)
19. A Beginner's Guide to Being in Love with Miyuki Kazuya by n_nami (ダイヤのA | Daiya no A | Ace of Diamond)
20. Aubade by Teyova (ダイヤのA | Daiya no A | Ace of Diamond)