[Reducing Mosaic]MIDE-581 My sister became my exclusive maid for three days. Minami Hatsukawa.

My cute but strict sister found the test I hid and got extremely angry. Since I managed to get a perfect score with desperate studying... I made her become my maid. In these three days, just the two of us, I'll bet everything on it. The master's words are absolute, but she still can't help but show her true self and do lewd things, getting scolded but still following orders. It feels so good that I gradually become more obedient, this is Minami Hatsukawa's 'Tsundere Maid' work！！