I have read this manga a while ago, and have since completely forgotten about it. It was about a group of teenagers (a guy and some girls) that live on an island, and go to school there. The school is suddenly transported into a different dimension and the stundets are confronted with demons. The demons allow them to make wishes, and the girls largely chose to have bigger breasts while the men become more handsome. Each students is then marked. That is all I read though my friend told me that there is more to it. If anyone knows more about this, could you please respond?
-Valika

Datenshi Gakuen Debipara