This is the last opportunity to impress Scott Bemand and his fellow coaches before Ireland embark on a much-anticipated tour to South Africa, playing the Springbok Women on October 24 and 31.
Saturday's rematch with Japan (kick-off 2pm - live on IrishRugby+) will see Bemand's side play in Cork for the first time since their August 2025 victory over Scotland before the Rugby World Cup.
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Looking forward to the fixture, scrum coach Denis Fogarty said: "It is making sure ultimately we're playing to win the game, but also identifying the areas that we needed to work on and get right going into this week.
"So, (getting the) balance right in terms of selection was key, but also in the mind of using this competition to start growing the depth within our squad, getting more caps into players.
"There is a focus on areas that we need to clean up - discipline, allowing teams access. That was a big area that we focused on going into this weekend."
He added: "I do think there may be two or three (new players) that might come in this weekend, to allow them to get on the pitch and express themselves, and those players have earned it.
"They have been knocking on the door for some time, and I think this is a really good opportunity to see them excel on an international stage."
Erin King has led Ireland to wins over Italy, Wales, Scotland, and Japan since taking over as captain earlier this year
Stacey Flood is pictured at the IRFU High Performance Centre, fresh from helping Ireland to a hard-fought 31-24 triumph over Japan in Galway
Backs and kicking coach Gareth Steenson is pictured at the IRFU HPC where the Ireland squad have been training ahead of decamping down to Cork
Munster winger Alana McInerney is one of the uncapped players who is striving to be involved in Saturday's rematch with Japan
Scott Bemand said that 'winning performances is a big one' in terms of Ireland's goals for the Series, but regarding selection, there will be 'people who have earned the right to have a go' against Japan in Cork
West Cork native Enya Breen is hoping to make the matchday squad for the second Japan clash, having last played for Ireland at the 2025 Rugby World Cup
It is just over four years since Dannah O'Brien made her Ireland debut against Japan, and she now has 37 caps to her name
Niamh O'Dowd, who started both of the Vodafone Ireland WXV Series matches at loosehead prop, is pictured alongside teenage Ulster lock Olivia McKinley
Caitríona Finn, one of the Ireland squad's uncapped backs, kicked three conversions when Munster overwhelmed Ulster 62-0 at Virgin Media Park in August
IQ Rugby graduate Niamh Gallagher came on for the final few minutes against Japan in Galway, winning her third Ireland cap
Blackrock College and Leinster's Kate Jordan is pictured during Wednesday's training session at the HPC's indoor facility
Linda Djougang made a very rare appearance as a replacement last week, coming on for Eilís Cahill early in the second half
Jemima Adams Verling, a debutant against the USA, switched to number 8 for the first Japan game and racked up 68 minutes on the pitch
Experienced prop Linda Djougang is pictured as the Ireland players are put through their paces during the afternoon's outdoor pitch session
Brittany Hogan was back with a bang in Ireland's starting XV last Sunday, scoring two tries in a player-of-the-match performance
Forwards Jane Clohessy, Linda Djougang, and Sophie Barrett look on as Ireland, who are ranked fifth in the world, gear up to face Toshizumi Kitagawa's Japan side again
Ireland captain Erin King grits her teeth as she trains ahead of what is set to be her 15th Test cap for her country
Since making her debut during the 2026 Guinness Women's Six Nations, Robyn O'Connor has scored tries against Italy and Scotland, and accumulated five caps
Ireland defence coach James Scaysbrook is pictured with Aoife Dalton, one of the team's try scorers during the Dexcom Stadium encounter with Japan
Scott Bemand talks to the players at the IRFU High Performance Centre, ahead of what will be his 31st Test in charge of Ireland
