Children's Time 7!

Saki was being violently assaulted by Kouji, Osamu, and Ryoichi in her room, her whole body tied up with a rope, her legs spread wide open in front of the mirror, and she was writhing in agony as a vibrator was used on her. Later, Saki was on the station platform while she was on her way home from school. At the behest of her children, she was unable to write a draft and spent the day with the rotor inserted...