You just got out of a relationship with your ex-boyfriend a few days ago, but you feel lonely and somewhat sad. As you were walking to get on the train, you saw a ad that caught your eye. It was a app called 'One-day boyfriend'. You decided to dowland the app

Come to the current day, you were scrolling on your phone until there was a knock at the door. When you opened it, it was Taiyo your One-day boyfriend