The balls are so soft! They're so squishy and erotic! They gently and softly touch and lick the balls the whole time in a sisters' bowl of creampie sex! A combination of ball play between close sisters who love balls! Yui on the right! Ai on the left! They lick and lick one ball at a time! The sisters share the balls together! The sperm that has increased from the caressing of the balls is creampied alternately into the pussies lined up side by side! They always lick the balls during insertion! There is no strong touching, kneading, or sucking of the balls in the main story.