Amateur Career
- 2012 World Youth Championships Quarter-finalist in Jerevan, Armenia as a Light Flyweight.
- Defeated Almambet Alibekov (Kyrgyzstan) 14-10
- Defeated Anton Chernamaz (Belarus) 19-8
- Lost to Lalitha Prasad Polipalli (India) 11-12
- 2013 Asian Youth Championships Silver medalist in Subic Bay, Philippines as a Light Flyweight.
- Defeated M.Roshan Sandaruwan (Sri Lanka) RSC 3
- Defeated Erdenbaat Tsendbaatar (Mongolia) 23-10
- Defeated Jong Hyok-Nam (North Korea) 20-9
- Defeated Lalitha Prasad Polipalli (India) 17-10
- Lost to Jade Bornea (Philippines) 13-15
| Preceded by: Katsunari Takayama Vacated |
WBO Minimumweight Champion 2015 May 30 – 2016 April Vacated |
Succeeded by: Katsunari Takayama |
| Preceded by: Donnie Nietes Vacated |
WBO Light Flyweight Champion 2016 Dec 31 – |
Succeeded by: – |
| Kosei Tanaka | |
|---|---|
| Statistics | |
| Nickname(s) | Chukyo no Kaibutu (中京の怪物?) “Monster of Chukyo” |
| Rated at | |
| Height | 5 ft 4 in (1.63 m) |
| Nationality | Japanese |
| Born | June 15, 1995 Tajimi, Gifu, Japan |
| Stance | Orthodox |
| Boxing record | |
| Total fights | 8 |
| Wins | 8 |
| Wins by KO | 5 |
| Losses | 0 |