Suiei-bu no Kininaru Senpai no On'nanoko - Ch. 26 - The swimming club Senpai I’m interested in shows off her Halloween costume at club.

[MangaDex]

 

[Darkshade13]

I don't quite know what the costume is (swimsuit demon magical girl?) but I approve.

 

[BCS]

dracula penis

 

[Hikineet]

Thanks for the chapter.