Might need some RPG gaming experience to understand this.
In
Yushayoshihiko to Maonoshiro ep8 they made some funny reference to AKB and idols in general.
The group on a quest to defeat the Demon King arrive at akihabara village, and find a 'class change' temple.
The hero who wants to change to "Warrior" class to learn more skills, but gets pushed and accidentally chooses the "Idol" class.
He then gets teleported to an Aki-p guy. Who questions the hero's destined quest to slay the Demon King, when his real destiny should be to become an idol.
"People always say they have no interest in being an idol. 'I just came with my friends and passed~' stuff like that. If you had no interest then why would you come with your friends"
And "We have chosen 37 people. When we get to 48, you'll have your debut"
Hero tries to leave, but can't. His body uncontrollably stays and participates in the dance lessons. And he just can't quit.
The Aki-p guy then goes on saying "Heroes and idols can both bring peace to the world". And starts a sousenkyou where only the top 20 people stay.
He even puts the hero into a sub-unit. Watariroka De Mamonotaoshitai.
Hero finally tells his original quest party members to suck it, he's staying. And goes through a scene imagining his bright future with his fans, ahem.
Hero finally only gets 2 votes, fails, switches back to his Hero class, and chases after his quest party...