https://www.dlsite.com/maniax/work/=/product_id/RJ01432071.html

Your classmate, the popular girl Shiraoto, seems willing to let you use her body as much as you want instead of reading manga at your house…
On her breasts, thighs, anus, pussy… She’ll even let you cum inside her as much as you want…!?
There’s also card games, cooking, and a rich story—enjoy a wonderful after-school time just the two of you…

Other Sin Gularity's games:
https://sukebei.nyaa.si/view/4476183
https://sukebei.nyaa.si/view/4479815

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