Whilst Koseki has been the dominant fighter at 102lbs her competition has long been questioned, despite the fact she unified in 2015 and has beaten the current WBO champion. That low level of competition rears it's head again this coming Friday when she takes on little known Chie Higano (6-4, 2), who really isn't expected to give much of a challenge to Koseki.
Before we look at the hopes of the challenger a quick bit of information on the champion, who is the longest reigning champion in the sport at world level. She began her career in 2007, in Thailand, and after starting 3-2, with two controversial losses to Winyu Paradorn Gym and Samson Tor Buamas, she has gone 19-0-1 (8) beating the likes of Winyu, in a rematch, Nao Ikeyama, Jujeath Nagaowam Saemi Hanagata and Ayaka Miyao to distinguish herself as the top fighter the division has ever seen.
In the ring Koseki is a rough and tough fighter who can box or fight and is the type who doesn't mind a street fight in the ring. In recent years she has shown more inclination to boxing but has had a reputation in the past for using her head if needed. She's tough, hits relatively hard for the division and has really impressive stamina forcing opponents to work at her rate through out a bout. At 34 she is certainly on the back end of her career but the southpaw from Tokyo will be inspired by the continued shows of Naoko Fujioka, the other queen of Japanese boxing, who is remaining a top level fighter into her 40's.
Higano is a 32 year old who is taking part in her first title bout, and sadly her record sums up her limitations with 4 losses in her last 7, including defeats to Jun Yabuki, Shione Ogata and Saemi Hanagata. She hasn't beaten an opponent with a record above a 50% winning rate and has never fought in a bout scheduled for more than 6 rounds.
Whilst Higano will know this is the chance of a life time it really is like taking a bloodied mouse and throwing it into a pool of piranha's. She has done nothing to qualify for a world title bout other than being able to make the weight, and although Koseki isn't the type to beat the snot out of an opponent she is the type who will beat an opponent up. For Higano the bout isn't about winning but more about surviving and it's hard to see how she will even do that given her record so far. To her credit she has been fighting at a higher weight than the Atomweight limit but she's never faced anyone resembling Koseki.
The bout keeps the champion active, but maybe, just maybe, it's time for Koseki to move up in weight and begin to look towards a second divisional title as no one at 102lbs is fit to challenge her. Higano isn't the best challenger, but even the best won't be good enough to give Koseki a fight, barring possibly Yunoka Furukawa who is unlikely to be given a bout with Koseki anytime soon anyway.