Akuryou Gakuen Reiko 2 ~Himejima Tennyo Densetsu~

Reiko Ashura is a girl born from psychic parents. For a long time Reiko has been using those powers to solve supernatural cases. The assignment given to Reiko this time is to infiltrate a private high school in a fishing village where there has been a streak of student disappearances denied by the school administration, but confirmed by the parents. This high school has a depressing atmosphere since it was build to isolate delinquents. Secret group meetings are held there at night...

[From vndbreview]