He freely fondled his older sister's large breasts, as she did not do housework. (Royd-104)

I live with my laid-back older sister, who always skips chores when it's her turn. So she added a condition: if I do chores, I have to massage her breasts for three minutes. At first, she didn't react, but gradually she started to get aroused by my increasingly skillful massage... demanding pleasure beyond three minutes, experiencing multiple breast orgasms. Then she suddenly transformed into an extremely slutty woman who wanted a penis and wanted to be penetrated...!?