Osake to Senpai Kanojo to no Amaama Doukyo Love Comedy wa Hatachi ni Natte kara

On the day of his twentieth birthday, the protagonist is asked by his girlfriend, Momiji-senpai, to move in with her, marking the start of their shared living arrangement. She enjoys drinking alcohol, and when she does, she becomes somewhat flirtatious. The story depicts their daily life together as a couple, focusing on the challenges of maintaining self-control in the face of her behavior. It is described as a romantic comedy involving a couple in a close and affectionate relationship.