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Peephole: My Aunt and Me's Secret Summer Vacation

Kenichi decides to help his aunt run a hot spring inn in the countryside during his college summer vacation.
Since his aunt is his first love, Kenichi works at the inn, fantasizing about losing his virginity to his aunt.
One day, however, he notices that there are peepholes everywhere in the inn.
As a virgin, his desire for sex grows when he sees women naked, masturbating, and having sex with other people in the flesh.
Will Kenichi be able to lose his virginity to his favorite aunt? And why are there so many peepholes in this inn?