Head-to-head · 12 bouts
Aobajo Yukio and Kotokaze Koki have met 12 times in recorded sumo. Kotokaze Koki leads 11–1.
Aobajo Yukio has won with: frontal force out (1).
Kotokaze Koki has won with: frontal force out (6), frontal crush out (3), over arm throw (1), beltless armthrow (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| January 1977 | Day 6 | Kotokaze Koki | Over arm throw | Maegashira 5 East vs Maegashira 11 West |
| March 1977 | Day 14 | Kotokaze Koki | Frontal force out | Maegashira 6 East vs Maegashira 8 West |
| July 1977 | Day 15 | Kotokaze Koki | Frontal force out | Maegashira 7 West vs Maegashira 3 West |
| January 1979 | Day 3 | Kotokaze Koki | Frontal force out | Maegashira 13 East vs Maegashira 8 West |
| January 1980 | Day 9 | Aobajo Yukio | Frontal force out | Maegashira 14 West vs Maegashira 7 West |
| March 1982 | Day 5 | Kotokaze Koki | Frontal crush out | Ozeki 1 East vs Maegashira 3 West |
| September 1982 | Day 3 | Kotokaze Koki | Frontal force out | Ozeki 1 East vs Maegashira 3 East |
| May 1983 | Day 10 | Kotokaze Koki | Beltless armthrow | Maegashira 1 West vs Ozeki 1 West |
| July 1983 | Day 6 | Kotokaze Koki | Frontal crush out | Sekiwake 1 West vs Ozeki 2 West |
| November 1983 | Day 9 | Kotokaze Koki | Frontal crush out | Maegashira 6 East vs Ozeki 1 West |
| January 1984 | Day 4 | Kotokaze Koki | Frontal force out | Maegashira 2 East vs Ozeki 1 West |
| January 1985 | Day 6 | Kotokaze Koki | Frontal force out | Ozeki 2 East vs Maegashira 3 East |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.