Trapped in a corporate job, Mashiro works herself to the bone every day. The only time she truly enjoys is when she is playing online games and talking to her friend Mitarashi, whose voice she loves to listen to. She doesn't know Mitarashi's face or real name, but his kind, soothing words and dreamy voice help her find respite from her stressful work life. However, one day, the Mitarashi she had only spoken to online suddenly shows up in real life...?!