The 29th wanpaku sumo national tournament was held yesterday in the kokugikan.
About 400 4th to 6th year primary school rikishi took part, separate for each year.
final rounds: http://www.ustream.tv/recorded/36487583
several other videos are listed there from earlier in the tournament, (quality exactly?) the same on Youtube:
The result page still lists last year's data, with the big Touma as the 6th year wanpaku yokozuna in the 28th tournament:
and the 5th year yokozuna in the 27th tournament (only the 4th year tournament is in the video), in his 4th year the videos look even more incomplete.
ARTE has again something about sumo: this time the son of a (amateur?) rikishi competing in wanpaku sumo.
I don't know the father, "one of the greatest sumo champions in Japan", now running a chanko restaurant.
With the shikona "Chikara" one won't find anything in the database - maybe the first name in his shikona, maybe he never was in ozumo and simply won the all-Japan amateur title, maybe one of the many Sasaki, that name appears in the end, maybe something is mentioned in the video.
No subtitles this time, viewable till Apr. 19th
French page: http://www.arte.tv/guide/fr/058363-001-A/graine-de-champion?autoplay=1
video link: http://arte.gl-systemhaus.de/am/tvguide/default/058363-001-A_SQ_2_VF_02246949_MP4-2200_AMM-Tvguide.mp4
German page: http://www.arte.tv/guide/de/058363-001-A/iron-kids?autoplay=1
video link: http://arte.gl-systemhaus.de/am/tvguide/default/058363-001-A_SQ_2_VA_02246962_MP4-2200_AMM-Tvguide.mp4