MIAA-049 My sister is my maid for three days.

Cute but strict sisters always talk to me about the scores of the exams, and then they say that if she gets a good grade, she listens to me... and she becomes my maid, because the words of the master are absolute, and she says, "I'm your sister, and I'm going to take it even if I have sex with my cock and my resistance, and then I'm going to get thirsty, and I'm going to be a cute, obnoxious little maid with a vertical name.