Sekai no Hashikko to Anzu Jam

To manage people of the apartment building instead of the father, is Hina. One day, destroys the keyboard of Apricot House's strange resident in room 304, and ...... Hina were asked to run errands for him instead of being reimbursed for the keyboard. In truth, the strange guy residing in 304 is the charismatic vocals of the popular band ...... he - !? What will be his true face!? Chicks usually, will change rapidly in the face of cool stage -! Experience this speed ​​of sound love story! Sweet danger of pleasantness to the mind...