隣の部屋の女騎士は、異世界人で飲み友達

Kotarou, a single man in his 30s, finds pleasure in drinking alcohol. One day, a female knight named Maribelle came from another world to the room next door. After he treated her to a meal when she was hungry, she wanted to repay him. When Kotarou asked her to "become my drinking buddy," then...!?