User blog comment:Xilinoc/Ch. 598 - The Shooting Star Project (We Only Have To Beat You Mix)/@comment-7606564-20140925160429/@comment-5398287-20140925184357

Given how much blood came out when the spikes erupted, I'd say he got pierced by them.

...unless, of course, it was GISELLE'S BLOOD ALL ALONG. *drama intensifies*