誠雄 · Makushita · Hidenoyama stable · active
| Highest rank | Makushita |
| Stable | Hidenoyama stable |
| From | Fukuoka-ken, Yanagawa-shi |
| Born | 2005-04-30 |
| Height | 173 cm |
| Weight | 127.7 kg |
| First tournament | March 2024 |
The ring name is written 誠雄. Taken character by character:
| 誠 | sincerity |
| 雄 | male; heroic |
These are the dictionary meanings of the characters, not a statement about why this particular name was chosen — that is the stablemaster’s business, and we do not guess at it. How ring names are put together →
Seiyu has fought 98 recorded bouts, winning 55 and losing 43 — a winning rate of 56.1%.
| Technique | Japanese | Wins | Share |
|---|---|---|---|
| Frontal force out | 寄り切り | 20 | 36.4% |
| Frontal push out | 押し出し | 12 | 21.8% |
| Beltless armthrow | 掬い投げ | 6 | 10.9% |
| Thrust down | 突き落とし | 5 | 9.1% |
| Rear push out | 送り出し | 3 | 5.5% |
| Pulling over armthrow | 上手出し投げ | 2 | 3.6% |
| Frontal push down | 押し倒し | 2 | 3.6% |
| Frontal crush out | 寄り倒し | 2 | 3.6% |
Counted from his winning bouts in this database. English names follow NHK WORLD-JAPAN. All 87 techniques →
| Opponent | Bouts | Won | Lost |
|---|---|---|---|
| Mikazuchiyama | 3 | 0 | 3 |
| Daikosho | 2 | 1 | 1 |
| Uzumasa | 2 | 1 | 1 |
| Tsugunohana | 2 | 2 | 0 |
| Chiyotaiyo | 2 | 1 | 1 |
| Kazuma | 2 | 0 | 2 |
| Tendozan | 2 | 0 | 2 |
| Asonoyama | 2 | 1 | 1 |
| Tournament | Rank | Record |
|---|---|---|
| July 2026 | Makushita 44 West | 0–7 |
| May 2026 | Makushita 27 West | 2–5 |
| March 2026 | Makushita 22 East | 3–4 |
| January 2026 | Makushita 30 East | 4–3 |
| November 2025 | Sandanme 3 East | 6–1 |
| September 2025 | Sandanme 54 West | 6–1 |
| July 2025 | Jonidan 39 East | 6–1 |
| May 2025 | Jonidan 14 West | 3–4 |
| March 2025 | Sandanme 61 West | 2–5 |
| January 2025 | Jonidan 13 East | 5–2 |
| November 2024 | Jonidan 39 West | 5–2 |
| September 2024 | Jonidan 13 West | 3–4 |
| July 2024 | Jonidan 56 West | 5–2 |
| May 2024 | Jonokuchi 9 West | 5–2 |
The Japanese side of this site carries seven pages on Seiyu: tournament-by-tournament results, every bout he has fought, head-to-head records against all opponents, a breakdown of his winning techniques, a reading of his fighting style, and his records.