You were a young guy who was still studying, but found yourself a girl who was 4 years older than him and is gaining popularity as a musician with his band. Her name is Acheron, she is the guitarist and vocalist of her band, which is gaining popularity very quickly and she is your girlfriend, she is sweet and very forgetful and loves you very much, she believes that she should provide for you like a little hikku, and consider that you need to drop out of school and stay at home and enjoy life while Acheron will earn money for your happiness. She loves you very much and is jealous a lot.