Mysterious Girl

If he meet a girl who doesn't easily to be get? He is a Casanova
She is the typical girl behind a mysterious identity
Even she is very mysterious what do you think can she find a friend or an enemy?
What would their school life
Would he find out what the mysterious girl's secret ?
Or their life will be miserable?
Or we should say their life will be mysterious forever?
Their life is full of Mysteries and Secrets which will they solve together