They were both about poor handsome men trying to build up their music career because they enjoy it and they need money. In both of them there's a girl who is in trouble because of her dad. SUFFB is more about the music than the romance whereas Mary Stayed Out All Night seems to be more about the romance than the music. Either way you see people trying to make a name for themselves and even though they are doubted by many, they will do anything to suceed.
Apartment building manager by day and electronic music composer by night, Kiyosumi enjoys his "clean and simple" existence free from relationships and distractions. He only needs his music, or so he thinks. One day, he gets an unexpected admirer as a distressed female neighbor destroys both his room's window and his solitude...