Sexy Magical Girl

Story

OVA — Summer 2003, 5 episodes, Finished.

In a certain town, there were consecutive phantom assaults. Because the incidents were extraordinarily, there was a rumor that a ghost or supernatural creature caused them. The students in the school which Akitoshi went to were frightened. One day, an unknown girl appeared in the school. However, all the students except Akitoshi thought they had known her. Feeling strange, he shadowed her in order to investigate her but he lost sight of her. At that moment, he heard the scream of a woman from the nearby material yard and went to the place where the scream came from.

Synopsis via AniList (English).