厚雅 · Jonidan · Futagoyama stable · active
| Highest rank | Jonidan |
| Stable | Futagoyama stable |
| From | Mie-ken, Matsusaka-shi |
| Born | 2005-12-12 |
| Height | 177 cm |
| Weight | 120.6 kg |
| First tournament | September 2021 |
The ring name is written 厚雅. Taken character by character:
| 雅 | elegant, refined |
⚠️The character 厚 is left out above: we do not yet have a meaning for it that we are sure of, and we would rather show a gap than a guess.
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 →
Koga has fought 199 recorded bouts, winning 74 and losing 125 — a winning rate of 37.2%.
| Technique | Japanese | Wins | Share |
|---|---|---|---|
| Frontal force out | 寄り切り | 16 | 21.6% |
| Frontal push out | 押し出し | 16 | 21.6% |
| Frontal crush out | 寄り倒し | 9 | 12.2% |
| Thrust down | 突き落とし | 5 | 6.8% |
| Beltless armthrow | 掬い投げ | 4 | 5.4% |
| Over arm throw | 上手投げ | 4 | 5.4% |
| Arm lock throw | 小手投げ | 4 | 5.4% |
| Slap down | 叩き込み | 4 | 5.4% |
Counted from his winning bouts in this database. English names follow NHK WORLD-JAPAN. All 87 techniques →
| Opponent | Bouts | Won | Lost |
|---|---|---|---|
| Azumayama | 6 | 2 | 4 |
| Takatairiku | 5 | 3 | 2 |
| Kokuryunami | 5 | 4 | 1 |
| Shishimaru | 5 | 3 | 2 |
| Togyokuko | 5 | 2 | 3 |
| Fujinonami | 5 | 1 | 4 |
| Wakayahara | 4 | 0 | 4 |
| Itakozakura | 4 | 2 | 2 |
| Tournament | Rank | Record |
|---|---|---|
| July 2026 | Jonidan 95 West | 4–3 |
| May 2026 | Jonidan 93 East | 3–4 |
| March 2026 | Jonidan 91 West | 3–4 |
| January 2026 | Jonidan 65 West | 1–6 |
| November 2025 | Jonidan 100 East | 4–3 |
| September 2025 | Jonidan 74 East | 1–6 |
| July 2025 | Jonokuchi 3 West | 4–3 |
| May 2025 | Jonidan 87 East | 1–5–1 |
| March 2025 | Jonidan 67 West | 2–5 |
| January 2025 | Jonokuchi 1 East | 4–3 |
| November 2024 | Jonidan 90 East | 2–5 |
| September 2024 | Jonidan 90 East | 3–4 |
| July 2024 | Jonidan 84 West | 2–5 |
| May 2024 | Jonidan 61 East | 2–5 |
| March 2024 | Jonidan 95 East | 4–3 |
The Japanese side of this site carries seven pages on Koga: 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.