producer, shirasaka koume, akagi miria, and koseki reina (idolmaster and 2 more)

Ah, Producer! Look look♪

Miria is a Kyonshii! Hop hop♪

Did you know? Kyonshii hop around because their knees and elbows don't bend!

Hop

That's why Miria also moves like this!

Hop

Cinderella Girls Theater

Shhh~...

Hiyah!

Knee

Bu-

-mp

That scared me! Who~... Geez, Reina-chan~!

You can't bend your knees now, can you? Not yet, you can't!

Dash~

Ah...In case you're wondering, there's a setting that allows you to move your knee joints after some time passes, so it's okay...

Aaaha hahaha!

So there-fore! Pay-baack♪

Wha—!? That's not fair!!

Haya!

Clomp

Episode 1619 I'm a Kyonshii!

シンデレラガールズ劇場第1619話【きょんしーだよー！】

(NOTE: This is known as "hiza kakkun," an act in which one bumps into another's knees from behind with their own. The action above is exaggerated.)