Thread:Stylx/@comment-1493741-20140907212745/@comment-136273-20141107201737

He was glowing because he began draining the power both from her leg and the bugs.

Anyway, spiritual weapons like Zanpakuto or Jiukundao (I presume) possess their own power. If it is so easy to drain the flies since they have only a marginal amount of innate energy, Ksenija will run out of them in no time.