A pair of serious glasses girls who usually just study. - But actually it's Mutsurisukebe. - When Such Two People Removed The Saddle And Drinking At Home, They Got Messed Up, And Played Mischief On Their Sleeping Brother-In-Law And Rolled Her Up! - At first, it was a cute mischief such as licking his face and ears, but the mischief escalated steadily to see who could do more amazing things such as licking nipples, kissing, and handjobs! - Even if the brother-in-law wakes up on the way, continue the mischief! - At the end, two people commit a confused brother-in-law!