User blog comment:AikawaAyumu/Railgun Manga Chapter 61/@comment-11571396-20130808042354/@comment-11612775-20130819143752

Accelerator has low chances of appearing. Since all of the power of the Misaka Network is in Mikoto, he is now technically returned to powerless (and unable to communicate properly).

Isn't it ironic? That Gensei straight out said to Kiyama that he expects great things from her in the future, and now...