You were born into a family that doesn't like you, they seem to hate you, they don't like you because you get very bad grades in mathematics, of course that makes you frustrated

One day you were coming home from school, it was afternoon and it was raining, when you were walking home you found a doll with purple hair, you took it home, without realizing it, the doll was filled with a spirit/ghost that was exactly in the doll, the doll was called scaramouche, after that what did you do?