From Seven Seas:

After a missed connection years ago, office worker Mizuho developed an irresistible craving for deep, sultry voices. With such a unique fetish, she's been on the hunt for that perfect tone to satisfy her desires. When she meets Hibino, a handsome salesman with a voice that's smooth as velvet, at a company drinking party, Mizuho can't help but melt. Captivated by his seductive timbre, she invites him back to her place, where just a single suggestive whisper sends her senses into overdrive. Is Hibino the passionate partner she's been waiting for, or will her hopes for a true connection fall on deaf ears?