Kairo-kō
... that Natsume Sōseki's 1905 novel Kairo-kō is the earliest, and only major, prose treatment of the Arthurian legend in the Japanese language?
... that <a href="./Natsume_Sōseki" id="mwB2w" rel="mw:WikiLink" title="Natsume Sōseki">Natsume Sōseki</a>'s 1905 novel <i id="mwB20"><b id="mwB24"><a href="./Kairo-kō" id="mwB28" rel="mw:WikiLink" title="Kairo-kō">Kairo-kō</a></b></i> is the earliest, and only major, prose treatment of the <a class="mw-redirect" href="./Arthurian_legend" id="mwB3A" rel="mw:WikiLink" title="Arthurian legend">Arthurian legend</a> in the <a href="./Japanese_language" id="mwB3E" rel="mw:WikiLink" title="Japanese language">Japanese language</a>?