[GVG-699] A female tutor who lusts for her student's dick,

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The tutor's older sister has improved the grades of many students so far, an excellent private tutor. However, she is actually a sis●con and likes co●mos. While hiding such a fetish, she proceeds with the lesson, but is manipulated by the mischievous 'Hajime-kun' and the sis●con bug throbs intensely. And finally, her reason bursts! Her self-control collapses and the older sister transforms into an erotic erotic.