Idk why people are so critical saying they're 22 so they should suspect people or be wise or super smart. 22 or not, they lived 5 years of torture- and all 5yrs of those, they were mentally aware which means it's even more hurtful. They have trust issues, but they have never been given a reason to doubt Duke Rosea (other than the two-faced son of his). In reality, age is not the only defining factor as to how they should react in situations such as this. Like in real life, age or experience is not 100% helpful.
Yes, experience makes us wiser, sometimes but other times, it can also make us more foolish. Experience is how we are able to define or decide how to protect ourselves. To say that every 20yr old and older in the world is wise is a dumb thing to say because come on, it's just not true. The fact that so many are complaining about their age, I think, shows this. Emotions get the better of us.
I think the use of isekai here is to show the bond Arjen and Arien have. The intensity of their siblinghood spans more than this lifetime. I also think that it was a way to explain that they've been mentally aware since birth bc of this rather than saying, bc their magic is strong- which it isn't seeing as their guardian is dying. There needed to be a reason for their mental awareness without falling back to they have high IQ or magical prowess.
I'm also not sure why people are egging to solve this conflict with the twins and royal family. The biggest obstacle the twins have is their mistrust/hatred for people who had abandoned them. That cannot be solved within months. It's not solved with just 30 chapters unless time skip. If their hatred was less ingrained, I would also complain at the lengthiness. But as it is, not only is it about the twins but the life of their guardian. And not just about them but also, about their birth and even about the Emperor.
