What is Japan national under-23 football team?
{{Infobox national football team | Name = Japan U23 | Badge = [[File:Japanese Olympic Committee logo.svg|96px]] | Badge_size = | FIFA Trigramme = JPN | Nickname = ''サムライ・ブルー''<br />([[Samurai]] Blue) | Association = [[Japan Football Association]] | Sub-confederation = [[East Asian Football Federation|EAFF]] (East Asia) | Confederation = [[Asian Football Confederation|AFC]] (Asia) | Coach = [[Go Oiwa]] | Captain = | Most caps = [[Kensuke Nagai]]<br>[[Keigo Higashi]]<br>(31 each) | Top scorer = [[Shoya Nakajima]] (19) <!--Kits--> <!--First kit--> | pattern_la1 = _jpn22h | pattern_b1 = _jpn22h | pattern_ra1 = _jpn22h | pattern_sh1 = _jpn22h2 | pattern_so1 = _jpn22hl | leftarm1 = 4eb2eb | body1 = 4eb2eb | rightarm1 = 4eb2eb | shorts1 = | socks1 = 4eb2eb <!--Second kit--> | pattern_la2 = _jpn22a | pattern_b2 = _jpn22a | pattern_ra2 = _jpn22a | pattern_sh2 = _jpn22a2 | pattern_so2 = _jpn22al | leftarm2 = DADADA | body2 = DADADA | rightarm2 = DADADA | shorts2 = FFFFFF | socks2 = FFFFFF <!--End of kits-->| First game = {{fbu|23|MAS}} 1–1 {{fbu|23|JPN|1947}}<br />([[Kuala Lumpur]], [[Malaysia]]; December 1990)<ref>{{cite web|url=http://rdfc.com.ne.kr/int/jpn-u23-intres.html|title=Japan - International Results U-23 (Olympic) Team [Malaysia (1) – Japan (1)]|author=Hyung-Jin Yoon|publisher=RDFC|date=6 May 2006|access-date=29 March 2016|archive-url=https://web.archive.org/web/20160329125658/http://rdfc.com.ne.kr/int/jpn-u23-intres.html|archive-date=29 March 2016|url-status=dead}}</ref> | Largest win = {{fbu|23|JPN|1947}} 13–0 {{fbu|23|PHI}}<br />([[Hong Kong]]; 12 June 1999) | Largest loss = {{fbu|23|DEN}} 6–1 {{fbu|23|JPN|1947}}<br />([[Kuala Lumpur]], [[Malaysia]]; 6 February 1994) | Regional name = [[Football at the Summer Oly