Cardiff Blues flanker Josh Navidi will make his international debut at the Prince Chichibu Memorial Stadium, in a side that also sees Tom Prydie (Dragons), Rhys Gill (Saracens) and Andries Pretorius (Blues), come into the starting XV.
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Outbreaks of light rain or drizzle expected around the coast and hills.
Mike and Cynthia from Ystradgynlais flew out to the German city for a weekend away.
Fine and dry at first but becoming largely cloudy with outbreaks of rain or drizzle.