Scotland captain Kelly Brown spoke this week of not taking them for granted, especially given that Scotland slipped to a shock defeat at the hands of Tonga a year go.
"In the summer, they beat Wales and they're a side that, in the long-term, is really looking forward to hosting the World Cup in 2019.
"So we're expecting a very tough challenge. They've got a good set-piece, they like to throw the ball about and they've got some very quick players.
"So we really need to make sure that we're on our guard in all areas."
Ayumu Goromaru (YAMAHA Jubilo); Toshiaki Hirosi (TOSHIBA Brave Lupus), Male Sau (YAMAHA Jubilo), Craig Wing (KOBE STEEL Kobelco Steelers), Kenki Fukuoka (University of Tsukuba); Kosei Ono (SUNTORY Sungoliath), Fumiaki Tanaka (PANASONIC Wild Knights); Masataka Mikami (TOSHIBA Brave Lions), Shota Horie (PANASONIC Wild Knights), Kensuke Hatakeyama (SUNTORY Sungoliath); Luke Thompson (KINTETSU Liners), Shinya Makabe (SUNTORY Sungoliath); Hendrik Tui (SUNTORY Sungoliath), Michael Broadhurst (RICOH Black Rams), Ryu Koliniasi Holani (PANASONIC Wild Knights)
Yusuke Aoki (SUNTORY Sungoliath), Yusuke Nagae (RICOH Black Rams), Hiroshi Yamashita (KOBE STEEL Kobelco Steelers), Hitoshi Ono (Toshiba Brave Lupus), Takashi Kikutani (TOYOTA Verblitz), Atsushi Hiwasa (SUNTORY Sungoliath), Yu Tamura (NEC Green Rockets), Yoshikazu Fujita (Waseda University)
Tickets for next Tuesday's clash against Japan are great value as follows:
Our Early Bird offer of £4 off means an adult seat will cost just £15 and standing tickets are £10. U16s can watch for £5 or just £1 with the Early Bird price.
Gloucester Rugby Season Ticket Holders will also get an extra £2 discount per ticket off.
To purchase, please call 0871 871 8781 (option 2), visit www.gloucesterrugby.co.uk/tickets or visit the Ticket Office at Kingsholm.