Still wondering when the heck that ML develop feeling for her. For me it look like when he was sent to the academy. But how do you even fall in love with someone you didn't even have time to spend with.
What's their age difference again? Just curious.
Also in manhwas usually the relationship development between MCs is slow burn, but it's really worth the wait.
@aodpds711 who said he developed feelings for her? So far the development went from “my step sister is a bitch” to “my step sister is actually not that bad it seems”