The Sunwolves head coach Mark Hammett has made three changes and one positional shift to his starting XV that is set to face the Jaguares on Saturday in Tokyo.
Scrum-half Atsushi Hiwasa comes in for Yuki Yatomi, who misses out completely on the matchday squad.
Midfielders Derek Carpenter and Harumichi Tatekawa swop places.
Yoshiya Hosoda, who replaces Tomás Leonardi, will link up with Ed Quirk and Andrew Durutalo in the back row.
Takuma Asahara replaces Shinnosuke Kakinaga in the starting lineup with the latter packing down next to loosehead prop Masataka Mikami and captain Shota Horie in the front row and Asahara is named amongst the bench.
Sunwolves: 15 Riaan Viljoen, 14 Viliami Lolohea, 13 Derek Carpenter, 12 Harumichi Tatekawa, 11 Mifiposeti Paea, 10 Tusi Pisi, 9 Atsushi Hiwasa, 8 Ed Quirk, 7 Andrew Durutalo, 6 Yoshiya Hosoda, 5 Liaki Moli, 4 Hitoshi Ono, 3 Shinnosuke Kakinaga, 2 Shota Horie (c), 1 Masataka Mikami
Replacements: 16 Takeshi Kizu, 17 Ziun Gu, 18 Takuma Asahara, 19 Faatiga Lemalu, 20 Talyo Ando, 21 Kaito Shigeno, 22 Yu Tamura, 23 Yasutaka Sasakura
Date: Saturday, April 23
Venue: Prince Chichibu Memorial Stadium, Tokyo
Kick-off: 14:15 local (05:15 GMT)
Referee: Jamie Nutbrown
Assistant Referees: Chris Pollock, Noriaki Hashimoto
TMO: Takashi Hareda