Wingman

Kenta is a Japanese teenager who is obsessed with superhero stories. One day, he meets a mysterious girl named Aoi. She tells him she is from a dimension called Powdream, and gives him a powerful item called Dream Note, which can fulfill wishes. Kenta is eager to realize his dreams by asking to be transformed into a superhero named Wingman. However, the dictator Rimel fears that the new hero will endanger his existence in Powdream, and swears to get rid of Kenta by separating him from Aoi.

[From mobygames]