Also please keep in mind that I'm a straight male that occasionally reads Harem and romance. I'm typically defending females that get unjust hate. Especially for absurd reasons. So you know it's ESPECIALLY BAD when even I find her so annoying that I refuse to defend her. I've seen harem bimbos with more common sense than her.
In any other manga her character would have been clasified and treated as the spoiled incompetent royal brat that causes a revolution against her and her entire familly. Instead the author is treating her like -UWU Im just silly girl- Its a real shame because up until ch. 5 i was willing to put up with wathever to see the main story through but...Ive never had a female character make me this mad before.
A short fat boy is living a miserable life. He's being bullied constantly and is suffering. One day he inherited his grandfather's house. Turns out that in his father's house is a warpgate to another world. He end up inheriting his grandfather's stats and equipment which not only makes him powerful but turns him tall and good looking. Now he's going back and forward between worlds while going to school.

I only like the high-schooler girl, hope he ended up with her. She literally didn't judge him for physique, knew him right away even when he changed, and decided to help him back. Not like that princess she is self centered, well I understand with her background but still there are limits.... Whatever I just had to vent (not found of the princess)