a sequel
... that Natsuki Takaya created a sequel to Fruits Basket to promote the release of its collector's edition?
... that <a href="./Natsuki_Takaya" id="mwA74" rel="mw:WikiLink" title="Natsuki Takaya">Natsuki Takaya</a> created <b id="mwA78"><a href="./Fruits_Basket_Another" id="mwA8A" rel="mw:WikiLink" title="Fruits Basket Another">a sequel</a></b> to <i id="mwA8E"><a href="./Fruits_Basket" id="mwA8I" rel="mw:WikiLink" title="Fruits Basket">Fruits Basket</a></i> to promote the release of its collector's edition?