The trope be like "When my best friend turn into my step-mom" But Daniel cant mad on Amanda, he's kinda glad if Amanda become to his Step-Mom since she's very care to him lol (and the most important Daniel's mom is happy, if the mom happy so the son is happy too)
For Eric and Art, Daniel doesn't have any hate on Art, he just fell pity on him like; "sir, there's many good man out there, why you choose this rat (Eric)? I don't hate you as my step-dad, i feel pity on you sir--i mean father? Papa?" Daniel seems want Art as his real father until he start to call him papa or father than Eric (Daniel call Eric with name or slander)