The more experienced Higano has been a professional since 2014 and has shared the ring with a number of notable fighters, including former Japanese female Minimumweight champion Jun Yabuki, former world champion Momo Koseki, up coming title challenger Saemi Hanagata and talented Korean Eun Hye Lee. Although she has lost her most notable bouts she has proven to be a solid fighter, though not a world class one. Coming in to this she'll likely know that time isn't on her side and her career certainly hasn't got too long left.
As for the 29 year old Narita there's a distinct lack of notable opponents on her record. She turned professional in 2016 and lost on her debut before having some mixed success and building a 2-2-2 record to end last year. Earlier this year she scored her most notable victory, over Yumiko Shimooka, in a 6 round bout but it's hard to read too much into that given the limitations of Shimooka.
At the moment no other bouts for the card have been announced, neither has the name of the show, though we're expecting the show to have bouts announced over the coming weeks.