Touhou Sangetsusei ~ Visionary Fairies in Shrine. - Vol. 2 Ch. 8 - Those With Doors on Their Backs

[MangaDex]

 

[usousagi]

And here I expected the 9 to drag out a wriggle in a rope sack.

 

[Riverr1155]

I first thought cirno was flexing her muscles

 

[Superpou]

Tan Cirno

 

[Cryptico]

oh shit, a rhythm heaven reference.