What's the natural next step in a relationship before marriage? For Shiina and Shuu, it's moving into an apartment together! But each up comes with its own down, and the couple is surprised by the roadblocks popping up alongside the conveniences and fun of sharing a cozy abode. This is especially true for Shuu, who has a habit of not voicing his emotions, complaints or otherwise. Can the two of them hold on to their lovestruck bliss and successfully navigate the challenges that come with cohabitation?