Oresama

Oresama , lit. Me? is a Japanese film released in 2004.

After an initial run into a few fans, on the way, he falls asleep in his car, following which, he wakes up walking on a railway track. Experiencing a series of bizarre events with the locals, he soon realizes that he is in the year 1984. Upon realizing which, he goes to his house but as hes not sure how to face his family amp their reaction to him coming from the future, he runs away even after ringing the door bell. Contemplating what to do now, he meets Shinni Hassei Takano in an alley, posting an advertisement about wanting to make a band. He convinces Shinni about his obvious good looks amp being born to be a rock star. He also tells him that he could play the guitar amp sing in the band. Convinced, Shinni asks for them to go to a recording studio. However, Miyavi advises against it. They leave for Shinnis home, whereupon witnessing Miyavis remarkable guitar skills, Shinni accepts his proposal amp agrees on letting him stay at his house.

Source: Wikipedia