The 42 year old champion has seemingly fought by the mantra “if at first you don't succeed try, try again”. She won an OPBF title in her third attempt, over-coming Cho Rong Son for the OPBF Female Flyweight title in 2013, 4 years after her first shot at the title, and a world title in 6th world title fight, winning the WBO female Minimumweight title last year more than 9 years after her first world title bout. Not only did she have multiple shots at the titles, but her world title win didn't come until she was 41 years old, out pointing the much younger Erika Hanawa for the title last May.
On paper it's easy to rag on Ebata, who has lost more than 33% of her career bouts. Those numbers however don't reflect the fact she has come up short against fighters like Samson Tor Buamas, Tenkai Tsunami, Naoko Shibata, Nancy Franco and Kumiko Seeser Ikehara, twice. They also don't reflect the fact she could have had wins in 3 of those bouts, at least, and was fighting well above her natural weight.
Ebata is a grizzled veteran, she's flawed, limited, but a tough, hard working, experienced fighter who is much better than her record suggests, and had she been able to get regular fights at 105lbs there is a good chance that her record would better reflect her ability. Instead she is saddled with a misleading record and a tough career full of hard luck.
As for the Korean she's the much younger fighter, at 32, but has had a weird career herself. She lost in 2 of her first 8 bouts, losing a Korean Flyweight title bout to Hwa Won Lee in 2005, with Hwa Won Lee later claiming a world title at Featherweight, and would also lose in North Korea in 2007 to Hye Sung Kim, in what is recorded as Kim's debut. Following those losses she has gone 16-0 and is unbeaten in over a decade! Not only that but she was a long term IFBA Minimumweight champion, and she defended that title against accomplished fighters like Hollie Dunaway, Nao Ikeyama, Krisztina Belinszky, Ana Arrazola, Jujeath Nagaowa and Anahi Torres and has a non-title win against Gretchen Abaniel.
Sadly for Park she hasn't actually fought since August 2015, when she beat Abaniel. That sort of lay off can be career ending for some fighters, and it's going to be very interesting to see what she has left here. At her best, she would probably be a little bit too good for Ebata, but she's certainly not going to be her best with so much ring rust, and her timing, speed and sharpness might be a little bit off. For a boxer like Park, who doesn't have much in terms of fire power, the ring rust will likely play a major part in the bout.
At the primes the bout would be a close one, where Park would be favoured. Now however with Ebata beyond her prime and Park inactive we'd go with the active champion, especially at home. We don't see Park being stopped, but we do see her being out worked and Ebata earning her first defense.