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After leading Seidou to back-to-back Koshien championships as their undisputed Ace, Sawamura Eijun had finally conquered it all. He had survived the Yips, outlasted his rival Furuya, and proved that a loud-mouthed kid from the countryside could rule the mound. He was content, decorated, and ready for the future.
Then, he woke up.
Instead of his hard-earned gold medal and professional-grade muscles, Sawamura wakes up in his scrawny, 14-year-old body back in Nagano. He is a second-year at Akagi Junior High—a time when his pitches were unrefined and his "Numbers" didn't even exist. In a single night, the universe robbed him of his glory, his teammates, and his hard-won progress.
Furious and cursing the "Bastard Gods of Baseball" at the top of his lungs, Sawamura realizes he has two choices: mourn the future he lost, or use his "National Champion" brain to absolutely demolish the past. Armed with veteran instincts and surgical precision, the "New" Sawamura is about to turn the middle school baseball world upside down—and this time, he isn't letting anyone else take his mound.
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Sawamura, now a professional baseball player in MLB, returns to Japan to reunite with his former teammates from Seido. Hiding his pain from his injury, he happily celebrates at the reunion without telling anyone about it.
Hearing the regrets of his seniors for not being able to go to Koshien with the team, Sawamura feels more pain than ever. After leaving the party and discovering a poor child nearly in an accident, Sawamura rushes to help and becomes a victim of an unexpected accident himself.
Waking up in the body of the young Sawamura Eijun, what will he do from here? -
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Things don't always go as planned, but we always end up where we should be, right?
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Menceritakan kisah seorang gadis penggemar olahraga bisbol dan memutuskan untuk masuk ke sekolah unggulan di tokyo barat yaitu SMA Seidou.
- Language:
- Bahasa Indonesia
- Words:
- 822
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 37
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𝘈𝘱𝘢 𝘪𝘯𝘪 𝘣𝘦𝘯𝘢𝘳-𝘣𝘦𝘯𝘢𝘳 𝘵𝘦𝘳𝘫𝘢𝘥𝘪? 𝘛𝘢𝘱𝘪 𝘬𝘦𝘯𝘢𝘱𝘢? Dia merasa bahwa dia bukanlah orang yang istimewa sampai mendapatkan kesempatan seperti ini. Kepala nya pusing, pikirannya kabur oleh kenangan masa lalu atau masa depan (?) Menghantam nya begitu keras dan beban yang tidak terlihat membuat nya mual. Tapi itu malah memperjelas pemikirannya bahwa ini adalah nyata.
Seakan itu belum cukup, suara dalam dan keras dari Kataoka kantoku yang sangat familir terdengar, membuat nya tersentak dan jantungnya berhenti sedetik.
"𝗞𝗮𝘂 𝗱𝗮𝘁𝗮𝗻𝗴 𝘁𝗲𝗿𝗹𝗮𝗺𝗯𝗮𝘁 𝗱𝗮𝗻 𝗸𝗮𝘂 𝘁𝗶𝗱𝗮𝗸 𝗺𝗲𝗺𝗶𝗻𝘁𝗮 𝗺𝗮𝗮𝗳? 𝗧𝗶𝗱𝗮𝗸 𝗮𝗱𝗮 𝘁𝗲𝗺𝗽𝗮𝘁 𝘂𝗻𝘁𝘂𝗸 𝗽𝗿𝗶𝗮 𝘀𝗲𝗽𝗲𝗿𝘁𝗶 𝗶𝘁𝘂 𝗱𝗶 𝗱𝗮𝗹𝗮𝗺 𝘁𝗶𝗺.."
𝘋𝘦𝘨.
"𝗝𝗶𝗸𝗮 𝗸𝗮𝘂 𝘁𝗶𝗱𝗮𝗸 𝘀𝘂𝗸𝗮, 𝗺𝗮𝗸𝗮 𝗷𝗮𝗻𝗴𝗮𝗻 𝗱𝗮𝘁𝗮𝗻𝗴 𝘂𝗻𝘁𝘂𝗸 𝗹𝗮𝘁𝗶𝗵𝗮𝗻. 𝗝𝗮𝗻𝗴𝗮𝗻 𝗽𝗲𝗿𝗻𝗮𝗵."
Dia yakin jantung nya benar-benar berhenti di sedetik itu! Jika harus melebih-lebihkan bahkan jika dia sudah pernah mengalami ini, dia sangat yakin jantung nya tetap akan berhenti sedetik.
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He just won Koshien.
This should be the best day of his life.
Instead, Miyuki felt like he was eleven years old striking out on a slow curve low and inside.
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Three and Out! by Ketomatoes
Fandoms: 忘却バッテリー | Boukyaku Battery | Oblivion Battery (Manga), 忘却バッテリー | Boukyaku Battery | Oblivion Battery (Anime), ダイヤのA | Daiya no A | Ace of Diamond
19 Aug 2025
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Haruka was silent. Which wasn’t unusual, except… he wasn’t just quiet. He was staring.
Trying to figure out why Kei was smiling like that at someone else. Smiling that bright, easy smile that—until now—Haruka had thought was only for him
“Haruka’s our pitcher!” Kei continued cheerfully, oblivious to the way his pitcher’s expression darkened like a storm cloud. “He’s really amazing! He throws so fast and his control is perfect and he never talks to anyone but talks to me sometimes and—”
“Really?!” Sawamura lit up, which should’ve been physically impossible considering how bright he already was. “That’s so cool! I’m a pitcher too! We should totally have a pitching contest later! I bet your pitcher is really good, but I’m pretty good too and—”
“That sounds fun!” Kei exclaimed.
Haruka’s eye twitched.
In which Kotesashi gets invited to Seidou for a scrimmage, and Haruka and Eijun play a petty little game on the mound
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Miyuki ignores the pitchers one too many times, so Sawamura takes him to court. No one actually knows what's going on.
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They thought they knew him—Sawamura Eijun, loudmouth first-year pitcher from LA with wild mechanics and a wilder heart. But the truth was, they only saw the surface. And the surface was about to crack.
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In sawamura’s last year of middle school, there’s a practice match for the first string of seido and they need a pitcher because Kawakami sprained his ankle and tanba a had a fever. Right before they were about to cancel the game Rei saw Sawamura at the batting cages hitting baseballs. Rei decides to go talk to him and she finds out he’s a pitcher. Sawamura plays for them and coach katoaka promises sawamura a place on the first string if he decides to go to seido.
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After losing in the semifinals of the Tokyo Metropolitan Spring Tournament (Spring Koshien), Seidou's downfall continued until what happened was inevitable. Leading up to the unprecedented disaster at the start of the Summer Qualifiers. But both Sawamura and Miyuki aren't willing to leave it at that.
This is their tale on how to fix the things that went wrong the first time around. With a lot of soul searching, bro- and romance, introspection, fun, teenagers being teenagers and an exasperated coaching staff, who desperately try to keep the zoo that is Seidou in some semblance of order.
Please enjoy the ride as our kids mature. But above all, enjoy their time spend at Seidou alongside them, so much so that we'd wish it could continue on forever.
side-note: at the beginning there is Furuya-bashing. It serves a purpose but won't continue after Spring/Summer Act I. I have other (good) things planned for him from Autumn onwards.
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Listen (to the heart of a girl) by Marionkart
Fandoms: ダイヤのA | Daiya no A | Ace of Diamond
16 Jun 2025
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Moving from rural Akita to Tokyo was not easy. Attending a big high school like Seidou when all of the schooling experience you have comes from an small all-girls school was not easy. Having to meet and befriend the baseball team because your only friends are the managers of said team was not easy- at first.
All of these things would be a lot easier if that short guy with pink hair would just stop looking at you like that.
(Reader meets the baseball club and is instantly scared of Ryousuke. Somewhere along the way, though, they fall in love).
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" I love you so much so I’ll say just one thing, hope you meet someone exactly like you, you piece of garbage, " The pitcher snapped at his former catcher, hand bawled into a fist. The ring sitting inside of his fist gave out a heart lurching crack.
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Some headcanons for Daiya No Ace!
1. Reader as Manager
2. Miyuki pre-dating
3. Friendship w First Year TrioWork in progress:
Kuramochi pre-dating
Daiya and their crush
Confession failures -
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The night before Eijun’s first real mission was way too short—he is excited, nervous, restless. When the nature of that mission changes to a more urgent one, his worry skyrockets. Good thing they’re in this as a team.
Series
- Part 3 of Superpower AU
- Language:
- English
- Words:
- 5,347
- Chapters:
- 1/1
- Kudos:
- 5
- Hits:
- 84
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'The journey of a thousand miles begins with a single step.'
Sawamura dies and time traveled back to the past.
Will he lead a better life than his last and succeed in protecting his friends? Or will it end up worst than his last life?
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Thirteen-year-old Alex Fraser has just moved from New Zealand to the quiet town of Shibukawa, Japan. Half-Japanese and fluent in the language, he still feels like an outsider—until a chance invitation pulls him toward something unexpected: baseball. With a cricket background but zero experience on the diamond, Alex finds himself stepping into a world he barely understands.
Set in the universe of Ace of Diamond, this original story follows Alex’s journey from curious observer to passionate player. Through new friendships, early struggles, and the quiet beauty of everyday life in Japan, Diamond no Ace: Prodigy blends slice-of-life warmth with the intensity of youth sports.
Note: No Yaoi, No Yuri, No Harem
Note: This is an ongoing fanfic and not yet to complete.
I update three times a week (sometimes even daily!), so stay tuned for regular chapters!Disclaimer: This is a non-commercial fanwork based on Yuji Terajima’s Ace of Diamond series. All original characters and events are the creation of the author. No copyright infringement is intended.
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Ace of the Diamond Headcanons by Heaven_s_Black_Box
Fandoms: ダイヤのA | Daiya no A | Ace of Diamond
19 Apr 2025
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Ace of the Diamond headcanons (full length fics are a separate work)
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*大家都是鱿鱿和章章的世界
*关键人物设定（发不了图）：https://1029momo.lofter.com/post/260a50_2bbf01981