Looking for BL

it's about two strangers (salarymen) who canoodle around every morning in the subway station bathrooms. They only know tidbits about each other through small talk and such. The chapters alternate between different POVs, and I remember a specific scene where one of them hears the other speak for the first time, and remarks about their voice being deep. The cover of the manga is a dude with short reddish hair, sitting in a toilet stall. I wish you a long and happy life if you can help me find this one.