Sean Lynn's side win in Kumagaya City to earn third victory in four matches of WXV Global Series; Japan have lost all four matches so far
Nel Metcalfe try gives Wales early lead before Moe Nagaoka registers home side's only try
Visitors extend lead through Kelsey Jones and Amy Williams tries along with two Lleucu George conversions
Sisilia Tuipulotu scores Wales' fourth try before Williams bags her second of the contest to seal an impressive victory
Japan 5-29 Wales
Wales have kept Japan pinned inside their half for almost all of this half.
You can only beat what is in front of you, and Sean Lynn's side are doing that convincingly in this second Test against the Sakura Fifteen.
Japan 5-29 Wales
Changes by Wales with lock Georgia Evans, prop Maisie Davies, hooker Molly Reardon, scrum-half Keira Bevan all on.
Japan 5-29 Wales
Siwan Lillicrap
Former Wales captain on BBC Radio Wales
That is superb play from Wales.
What's pleasing for me is the confidence from the Welsh players to attempt passes like that, last year they would have been hesitant in those positions.
They are starting to try things and it's starting to pay off.
Amy Williams
Watch as Amy Williams scores her second of the game
That is a cracker!
Wing Williams goes over for her second after a terrific wide pass by number eight Alex Callender puts full-back Lisa Neumann in motion.
She makes no mistake went putting the speedster over.
Japan 5-24 Wales
Catrin Edwards
Former Wales prop Catrin Edwards on Radio Cymru
Wales are trying to do a little bit too much at the moment, the tries will come when you're building momentum but you're not going to get them straight away.
They just need to play with a bit of sense here.
Japan 5-24 Wales
New Zealand number eight Kaipo Olsen-Baker has just been named as World Rugby's women's player of the year.
The Black Ferns forward won the award ahead of England's Zoe Harrison and Megan Jones, and Canada's DaLeaka Menin.
Japan 5-24 Wales
That was Tuipulotu's 10th Test try and she follows up with a dominant scrum after Japan fail to go 10 metres with the restart.
The prop is certainly in the mix for next year's Lions tour to New Zealand.
Japan 5-24 Wales
Philippa Tuttiett
Former Wales international on BBC One Wales
It starts from the dominance in the scrum, and then that quick thinking from Alex Callender put Wales in the best possible position.
And Sisilia Tuipulotu is so hard to stop from that position.
Sisilia Tuipulotu
Watch as Sisilia Tuipulotu scores Wales' fourth try
A free-kick is awarded from the scrum and Alex Callender goes quickly from the tap.
Loose-head prop Gwenllian Pyrs goes close but there is no stopping tight-head prop Sisilia Tuipulotu.
She crashes over to stretch Wales' lead, with Lleucu George hitting the left upright again with a tricky conversion.
Japan 5-19 Wales
Wales are bossing territory here and you feel this pressure will eventually tell.
The ball hits the ref from an overthrown line-out and Wales will have a scrum 10 metres out.
Great spot to launch a play - Keight on the hard line first?
Japan 5-19 Wales
Siwan Lillicrap
Former Wales captain on BBC Radio Wales
Seren Lockwood is so good.
She's such a threat, her speed of ball, her elusive behaviour in and around the breakdown is superb.
Japan 5-19 Wales
Japan stop a line-out drive illegally and Jennifer Nduka pays the price for the penalties racking up.
She is sent to the sin bin as Wales go for the corner... only to knock on.
Japan 5-19 Wales
That big chance goes begging.
Ball off the top again, then a big carry by Courtney Keight only for hooker Kelsey Jones to come in from the side when clearing out.
Japan are struggling to clear their lines though.
Japan 5-19 Wales
That's poor by Japan, a pass back into the 22 and the kick is hammered out on the full.
Big chance for Wales.
Japan 5-19 Wales
Philippa Tuttiett
Former Wales international on BBC One Wales
This game is not done yet, but I'd be surprised if anything changes this half.
I expect to see Wales kick on with their dominance.
Japan 5-19 Wales
Lleucu George gets the Test back under way.
Can Wales put this game to bed early on in the second half?
Sean Lynn will want to use his bench.
HT: Japan 5-19 Wales
The teams are heading back out.
A quick reminder that Wales will not climb back into the top 10 of the world rankings with victory today, although the gap is closing a bit.
HT: Japan 5-19 Wales
Catrin Edwards
Former Wales prop Catrin Edwards on Radio Cymru
Wales have been great at winning possession back and especially in the crucial moments.
To get that try in the last five minutes is a big psychological boost, it gives them a massive hub going into the second half.
It's great to see Lleucu George back today and full of confidence, her and Seren Lockwood are controlling the game.
HT: Japan 5-19 Wales
Siwan Lillicrap
Former Wales captain on BBC Radio Wales
That was perfect timing from Amy Williams, it's much nicer to be sat in that changing room with 19 points on the board, it's a great position for Wales to be in.
Lleucu George is having an amazing game, we've seen great variation from her kicks and she's really stretching this Japanese defence.
This is what we spoke about before the game, strength in depth. That's what competition does, it doesn't leave complacency.
Japan v Wales (07:00 GMT)
This round of games in the WXV Global Series got under way last night, when England eased past USA 55-12 in New Jersey.
After back-to-back defeats by Canada, the Red Roses got back to winning ways when running in nine tries, with wing Claudia Moloney-MacDonald getting four of them.
New Zealand are currently leading France 29-7 in a contest that kicked off at 6:10 GMT in Christchurch - and South Africa and Ireland meet in Cape Town this afternoon (13:00 GMT).
Image source, Reuters
