User blog comment:Xilinoc/Ch. 581 - THE HERO 2/@comment-10587310-20140521151114/@comment-24113610-20140521165719

Kubo confirmed that Kira is dead on his Tumblr account and Rose acknowledged he was dead before he fought NaNa. He said something along the lines of "Oh, I see" in reference to the fact that Kira had fallen.