Responses
You're so right. Also I am normally against romance, but the female character got me wishing she should be the FL.
I think the plot is good like this. A good female character doesn't always have to mean romance. It's nice sometimes but sometimes it just doesn't suit the story. I get what you mean though.
The plot is literally about him being lazy. The title states it. So complaining about him being lazy is literally just plain stupid. And I had no problems with the girl at all. She was literally a normal girl. She has her own thoughts and personality. Put yourself into her shoes for a second—your father brings some random hobo in and let's him live in your house. He does nothing all day besides sleep, doesn't clean up after himself, somehow can do everything perfectly as if mocking you, and has a bad personality.
He literally was playing with their lives and tried to run away by himself after mooching off of them. She had every reason to act the way she did when she was the one feeding and taking care of him. She was actually really nice compared to a lot of people.
People complain when a female character has no personality, and then turn around and complain when she does have one. Make you your mind.