You sound confused to me 'cause Ch 5 pg 10 speech bubble(SB) 5, Ciem stated that His Highness Noah is 18, 2 SB after Selene said that Noah is 2 years older than her. So why are you saying Noah is 19? Can you explain to me why do you keep on saying Noah is 19 when it was clearly stated that he is not. I'll be assuming you didn't properly comprehend what you just read unless you know something I don't.
Also saying "Y'all love to find excuses to like shit like this" when you like "Yoroizuka-san wo Baburasetai" is a different breed of hypocrisy, as that is far worse compared to this series who only have 2 years age gap. You're sense of self is even confused like how you got confused with a simple stated fact in the manga.

Why do the ages have to be 16 and 18?? Why couldn’t they just have made them the same age