This HMV was entirely inspired by and built around the scene where the girls swap cum back and forth. I don't usually go for vanilla but episode 3 really got me.

From Seika Jogakuin Kounin Sao Ojisan 1-3.

High quality version available here: https://mega.nz/folder/bZYB0a6J#OZLRNKAQ2Nh5rTkEvdx3Rg