A slice-of-life about modern life as a couple... Yuuya Aida and Rio Aihara have been dating for a year and three months, until one day he asks her to move in with him. Even though their jobs have different schedules and she is three years ahead of him, they decide to give it a try. It doesn't matter if life as a couple is not the paradise they sometimes thought it would be, if they have to fight over who ate the last flan or who does the washing machine, their love for each other never wavers. Here begins a quiet and adorable story about life as a couple in the 21st century.