After being away for five years, Sana Hikada returns to his hometown. Sana has been put up in an apartment own by his friend Aoi’s parents to live alone. When Sana doesn’t recognize his friend Nanaka, Nanaka storms off after slapping him. In order to repair their broken relationship Sana’s friends try to get Nanaka to once again warm up to him. However, Sana doesn’t know seen to know the real reason Nanaka is so upset.