It’s been two years since Naoki became a working adult. There hasn’t been any particularly good or bad things; it’s been extremely normal and peaceful. However, he was lacking excitement in his life.
With the arrival of spring, he rapidly got closer to three girls: the helpful but naive Mai, his cheeky tomboy imouto Yuana, and his boss Misaki, who seemed outside of his league. A trivial incident one day leads to him falling in love with one of them, and soon they begin living together, bringing moments of happiness that they have not felt until now.