I would like to ask, for clarification's sake, is the MC still a young teenager in these first episodes?
I believe the answer is yes for two clear reasons. For one, both he and Sunny seem to be constantly referred to as boy and girl far more than would be considered normal for fully grown adults. Two, they are rather diminutive in stature when compared to the rest of the adult cast. These two pieces of evidence (there are more just feel too lazy to go in-depth) lead me to believe that they still have room to grow not just mentally and emotionally but physically and that is an added component of why this is such a slow burn.
Cause see they got to be actual adults to do the dirty.
View attachment 1643685