Uruwashi no Sabrina

The next day, Matsumaru learns at work that his marketing concept "Nekoki" (a cat-tree) has been approved as the mascot of a snack product called "Ha". Furthermore, Aka is chosen to voice nekoki. They decide to keep their live-in relationship a secret from their employers due to Aka's worries about an appearance of impropriety. She also insists they are not a couple just from having slept together once in a moment of weakness, and that she will merely be lodging with him. The series is heavily concerned with the developing dynamic of their relationship.