Ma and Pa are going out for the day, which means Ashibe-kun and Goma-chan will be staying home alone! Ashibe-kun confidently tells his parents that he`s a grown-up now and won`t have any problems, so they ask him to help out around the house while they`re away. Ashibe-kun does everything he can to feel like a grown-up while home alone, but can he handle all the tasks his parents have asked him to do?