QTuo is a Top Rated seller trusted by more than ten thousand Amazon.co.jp customers in Japan. They sell in パソコン・周辺機器 and ホーム＆キッチン departments from Qtuo, Homasy, VicTsing, Adorner, Lontop and other brands. They offer Prime shipping for the several dozen products they have in stock.
They are a Top 500 Amazon.co.jp seller, ranked 124th overall. However a month ago they were ranked 97th.