Satou seems to be stuck in the parallel world that looks like an amalgamation of the game projects he's worked on. And while his insider knowledge of the world's systems gives him an advantage, he still needs to find his bearings before he can start planning what to do next. To that end, he heads to the nearest city to establish a base of operations.
I guess 15 makes you an 
adult in this country.
أظنّ أنّ سنّ الـ15 يجعلك راشدًا في هذه البلاد
Hier ist man also mit 15
schon erwachsen?
Así que 15 te hace un adulto aquí.
Así que 15 años te hace un adulto aquí.
La majorité de ce pays
est à 15 ans ?
Così a quindici anni
 sei un adulto in questo Paese...
Parece que nesse país
você é maior de idade aos 15 anos.
В этом королевстве пятнадцать лет —
 уже взрослый?