Inaka ni wa Kore Kurai Shika Goraku ga nai

A teacher who, after failing at job hunting, turned to relatives in the countryside and now works as a private tutor. His student, Saya, presents herself as a respectable, demure young woman in public, but... ? When it comes to private lessons with her tutor, she can’t contain her carnal desires, making him undo her underwear and begging for his reward... He teaches her every inch of sexual pleasure, feeding her lust-filled body to the brim! Tonight, too, her moans echo through the room...!

(Source: Lune-soft, translated)