My busty girlfriend, who's always been picked up and dropped off by her frivolous senior, skipped work again today… (Ishihara Nozomi MIDE-926)

My girlfriend, who's in the same class as me and my senior colleague, was suddenly switched shifts one day. Normally, after finishing my late-night shift, I'd walk home with her, but now my senior colleague was driving her. Even though I was jealous, I thought my girlfriend would be fine! But then she didn't answer her phone and skipped work...