I knew she was trash the moment she said, "I quit being a singer to give birth to you, Kanon. So make sure you accomplish my dream too, okay?" But damn... she is absolute garbage. Like CuIR said, she might have gotten pregnant "climbing" the ladder in the show biz industry, for all we know... we haven't seen her dad. Hopefully her mom didn't make her sleep with her own dad... that would be even more fucked up.
And dude, it was your decision to have her. She is not your tool to reach the dreams you couldn't reach. Fuck off and go back to sucking, and hopefully you choke on it and die a really embarrassing death that everyone gets to know about. "Ex singer and terrible mother dies after willingly sucking ten thousand dudes off."