So, there are 2 kids. They have goals to invent a plane. So one of them created the plane but his friend kinda betrayed him cuz he is soldier(if im not mistaken). In that country, people shouldnt not go out of the country or else they will get punishment.

Pretty sure you're talking about the song called Jailbreak, by Neru.

No official manga adaption however, tho. 😔

ive got a disease called having a big brain and excellent taste.

I rarely update my lists by this point.