Hirado ware
... that pieces of Hirado ware decorated with seven boys chasing butterflies were once made only for the shōgun and emperors of Japan?
... that pieces of <b id="mwA1w"><a href="./Hirado_ware" id="mwA10" rel="mw:WikiLink" title="Hirado ware">Hirado ware</a></b> decorated with seven boys chasing butterflies were once made only for the <i id="mwA14"><a class="mw-redirect" href="./Shōgun" id="mwA18" rel="mw:WikiLink" title="Shōgun">shōgun</a></i> and <a href="./Emperor_of_Japan" id="mwA2A" rel="mw:WikiLink" title="Emperor of Japan">emperors of Japan</a>?