My cute but strict older sister found the hidden test and got very angry. After desperately studying to get a perfect score... I made her my maid. I'm betting everything on these three days alone with my sister. She has to obey everything the master says, but she can't help but show her true self and do naughty things, even though she's being teased. She gets too good and gradually becomes obedient, a tsundere maid work by Minami Hatsukawa!!!
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