guys i wanna start this why people on twt saying pseudo-incest?
The main leads are supposedly step-siblings but the FL's mother never really considered the FL as her daughter and disowned her. The FL's mother is in a relationship with ML's father but the most important detail is that apart from not being blood related, the main leads grew up in different households. In this case, "pseudo-incest" is a misused term because for such to be true the main leads should have considered each other as family and grew up in the same household atleast but none of that even happened. You'll get it once you start watching.
FL's mother dated ML's dad (they didn't marry) so you could say they're step siblings but not really (?) but people…
Call me defensive or whatever but this drama barely screams pseudo incest at all and your statement already contained the answer why this is far from such. You can't just fully throw on terms if you don't understand the plotline because the drama barely showed any scene where the main leads were raised together in the same household for it to ever be considered PSEUDO incest.