Tropes

As Himself: Legendary Super Sentai narrator Nobuo Tanaka lends his talents.
Cute Bruiser: Costume Character Dimension is cute-looking yet strong enough to singehandely defeats both Akiba Blue and Yellow, on top of practically incapacitating Akiba Red merely with her cute looks.
Descended Creator: Theme singer Haruko Momoi voices the Monster of the Week.
Nice Job Breaking It, Hero: Downplayed. Akagi requesting a model of the Munya Munya Zubaan from Tsuu Shogun inspires the latter to make his next monster anime girl themed. Though the actual theming originates from a Hidden Badass in a mascot costume beating him up.
No Celebrities Were Harmed: Choko Nakagawa is a clear spoof of real world idol and Sentai fan Shoko Nakagawa.
Ripple Effect Indicator: Tsuu Shogun sees Choko Nakagawa replaced by one of his Mooks, making him realise that the Delusion World, Marusheena and Akibarangers are Real After All
Shout-Out: Yumeria channels Ichirou Mizuki.
Wham Episode: Tsuu Shogun learns that he can rewrite reality and starts putting more effort into being the villain.
Wrong Genre Savvy: Everyone expects Costume Character Dimension to transform from her cute appearance into a more monstrous form. Too bad Tsuu Shogun was Genre Savvy enough to not give her one.

Recap / Hikonin Sentai Akibaranger S 2 E 06