Sexy Magical Girl(2003)

Sexy Magical Girl is an anime series based on a visual novel by Colors. A town is gripped by a wave of phantom attacks that defy explanation, sparking rumors of supernatural forces at work. When a mysterious girl materializes at Akitoshi's school, he alone remembers nothing of her, prompting him to investigate. His search leads him to a material yard where he discovers his classmate Mikage under attack by creatures called Yuragi. A skilled fighter named Ai arrives to save her, but her sudden appearance raises urgent questions. Is Ai an ally fighting to protect the town, or does she harbor hidden motives? As Akitoshi uncovers the truth behind the phantom assaults and the magical forces at play, he must determine who he can trust in this supernatural conflict.