On 30 May, caretaker coach Mark Hammett named a 33-man squad for Japan's June tests against Canada and Scotland.

[2] Coaching team: On 9 May 2016, Vern Cotter named a 27-man squad for Scotland's June two-test series against Japan.

[6] On 19 June, Gordon Reid was called up to the squad to replace the injured Alasdair Dickinson.

[7] Coaching team: Touch judges: Marius Mitrea (Italy) Brendan Pickerill (New Zealand) Television match official: Ian Smith (Australia) Touch judges: Ben O'Keeffe (New Zealand) Brendan Pickerill (New Zealand) Television match official: Ian Smith (Australia) Notes: On 11 June, Japan played away to Canada in the lead up to the Scottish series.

Man of the Match: Djustice Sears-Duru (Canada) Touch judges: Kurt Weaver (United States) Derek Summers (United States) Television match official: David Smortchevsky (Canada) Notes: Key