User blog comment:Lordranged7/Quiz! What do they have the same with each other? V4/@comment-4880952-20130523191259/@comment-4880952-20130523192523

Thanks~! ^^"

And my answer is:

A mixi max debuted in all the Episodes. (Shindou in the 17th, Kirino in the 21st, Taiyou in the 24th and Shinsuke in the 25th).