The 12th episode of anime Inou Battle wa Nichijou-kei no Naka de (When Supernatural Battles Became Commonplace) that was aired this week features an image of a character wearing Mad Catz T-shirt during the end credit.
There's no story behind this image except that they're all members of the evil organization.
Inou Battle is a romantic comedy anime about a group of high school students who possess superpowers such as time or elements manipulation. The anime became a talk of the town when "Hatoko's Meltdown" scene (in episode 7) was aired in Japan.
In October the anime already had its protagonist wear Mad Catz T-shirt in episode 2.