Miseijuku Na Imouto No Mama De

This is a hentai visual novel that follows the story of a couple who live in an island town and start flirting with each other before it ultimately turns into foreplay that eventually progresses into sex in different poses. The female protagonist is a cute bishōjo who finds herself sexually attracted to a much older man, so she lets herself experience all the passion and perversion he has to offer. The game is in Japanese but despite that, it does come with simple gameplay that enables you to flip through various scenes that feature ahegao, sumata, gokkun, and more using the Next and Skip buttons.