Elis-Wyn Benham scored two tries as Wales cruised to a 66-3 win over Japan in their final game of Pool A.
The Welsh ran in ten tries in total, as they proved too strong for their opponents, who fell off far too many first-up tackles.
Jarrad Evans, who also slotted five conversions, got them started before Benham showed his pace to sprint over down the right.
Tom Phillips powered over for the third with Benham completing his brace and securing the bonus point.
Josh Adams went over for the fifth on the stroke of half-time as Wales led 33-3 at the break.
They started the second half quickly tries from Adam Beard and Dafydd Howells to push the score out to 45 points, before Liam Belcher crossed to seal the half-century.
There was still time for two more, from Seb Davies and Adams, while Japan couldn't find a way through despite late pressure.
Tries: Evans, Benham 2, Phillips, Adams 2, Beard, Howells, Belcher, Davies
Cons: Evans 5, Jones 3
Yellow Card: Urabe
Wales: 15 Dafydd Howells, 14 Elis-Wyn Benham, 13 Garyn Smith, 12 Owen Watkin, 11 Josh Adams, 10 Jarrod Evans, 9 Tom Williams, 8 Tom Phillips, 7 Ollie Griffiths, 6 Seb Davies, 5 Rory Thornton (c), 4 Adam Beard, 3 Dillon Lewis, 2 Ryan Elias, 1 Luke Garrett.
Replacements: 16 Torin Myhill, 17 Keagan Bale, 18 Joe Jones, 19 Lee Taylor, 20 Liam Belcher, 21 Kieran Hardy, 22 Dan Jones, 23 Joe Thomas.
Japan: 15 Ryuji Noguchi, 14 Seiya Ozaki, 13 Kaisei Kasahara, 12 Yusuke Kajimura, 11 Hirofumi Higashikawa, 10 Taiseitsu Kanai, 9 Ryuji Yonemura, 8 Tevita Tatafu, 7 Kosuke Urabe, 6 Faulua Makisi, 5 Hiroto Kato, 4 Tomoki Saita, 3 Tatsuya Kakimoto, 2 Kosuke Horikoshi (c), 1 Shogo Miura
Replacements: 16 Ryosuke Iwaihara, 17 Ryoma Kuhara, 18 Yuma Fujino, 19 Atata Moeakiola, 20 Go Maeda, 21 Daiki Nakajima, 22 Rinpei Sasaki, 23 Hironori Yatomi