As mentioned Choi won a world title on debut, though that's only a small part of her battle which has seen her escape the North Korean regime, win a world title as a teenager, become a 2-weight world champion and evidence that refugees aren't a bad thing, even when they are escaping your biggest national threat. The talented Choi claimed the WBA female Featherweight title on debut in 2008 and then moved on to become the WBA female Super Featherweight champion when she out grew the smaller weight class.
Although not a major international star Choi has recorded numerous notable wins. They include victories over Tenku Tsubasa, Claudi Andrea Lopez, Sandy Tsagouris, Shannon O'Connell, Fujin Raika and Chika Mizutani. She not only has an impressive record but also solid skills, with an out-side fighter mentality, and the frame to fight to that mind set. She's got under-rated speed, nice combinations and hits hard enough to keep very solid fighters honest, whilst also having proven world class stamina. Also at the age of 26 she's still maturing and still improving, and is likely several years from really reaching her prime.
Aged 33 Miyoshi has been around the block, and although she debuted only 5 months before Choi she has had a much rougher and tougher career. She has suffered a number of losses, including stoppages to Riyo Togo and Tomoko Kawanishi, but after a 3-5-1 start she has found her groove going 10-4 in her last 14 bouts. Those 10 wins include notable victories over Tenku Tsubasa, Riyo Togo, Chika Mizutani, and Kai Johnson. They have seen her become a 3-weight OPBF female champion and dip her toes at world level, with losses to Yazmin Rivas and Shannon O'Connell.
In the ring Miyoshi is the type of fighter who comes to fight. She's not the most skilled, or the most naturally gifted in terms of size, strength or speed, but she is a fighter with a pressure style, a lot of aggression and a real will to win. She can be out boxed, she can be hurt and she can be stopped, but she'll never just turn up and lie down. As a result she'll be coming in to this bout with the attitude of forcing her fight on to Choi and could be a real handful, though a win here would be the biggest and best of her career by some margin.
With Miyoshi being a pressure fighter and Choi being a boxer it's fair to say that Miyoshi will be backing up Choi, a lot, but the Korean is used to that and will look to use her more technically sound boxing skills to good use. What we expect to see is for Miyoshi to come forward, and Choi to out box her on the back foot with her more rounded and natural skills. There will be moments when Miyoshi gets inside and roughs up the champion, but they will be few and far between with Choi taking a clear decision after 10 rounds