The Lunatic Capris Story of Sugar Blossom

One night, Keiichi Yukihara is visited by a girl in his dreams. The girl tells him that the next day, a timid girl with bangs will talk to him and that he must befriend this girl. The next day, he does exactly that and finds out the girl's name is Michika. What he doesn’t expect though, is that the girl talks to a doll she carries with her… A doll that has a remarkably similar appearance to the girl that appeared in his dream. What is the mystery of the dream girl and why must he befriend Michika?