Britz starts for Sunwolves
Britz will run out in the No.8 jersey in a team which also features fellow South African Riaan Viljoen at fullback.
Other big names in the side include locks Sam Wykes and Liaki Moli, loose forward Edward Quirk as well as star hooker Shota Horie.
Sunwolves: 15 Riaan Viljoen, 14 Takaaki Nakazuru, 13 Timothy Lafaele, 12 Derek Carpenter, 11 Kenki Fukuoka, 10 Hikaru Tamura, 9 Keisuke Uchida, 8 Willem Britz, 7 Edward Quirk, 6 Malgene Ilaua, 5 Sam Wykes, 4 Liaki Moli, 3 Heiichiro Ito, 2 Shota Horie, 1 Masataka Mikami.
Replacements: 16 Takeshi Hino, 17 Koki Yamamoto, 18 Takuma Asahara, 19 Kotaro Yatabe, 20 Shokei Kin, 21 Kaito Shigeno, 22 Ryohei Yamanaka, 23 Shota Emi.
Date: Saturday, February 25
Venue: Prince Chichibu Stadium, Tokyo
Kick-off: 13.15 (17.15 NZDT; 04.15 GMT)
Referee: Egon Seconds (South Africa)
Assistant referees: Marius van der Westhuizen (South Africa), Akihisa Aso (Japan)
TMO: Minoru Fuji (Japan)