The song is JUST A DREAM by hip-hop artist GADORO, from his first album 四畳半 (four-and-half tatami mats, a common measurement for apartment/room size, typically equally about 6.5 square meters/70 square feet, and apparently the size room he started his career from). He has some of his stuff up on Youtube here, though unfortunately not this specific song.
(Probably doesn’t need to be said, but the empty bubbles on page 3 are supposed to be empty, not accidentally left out in typesetting.)
