Satoshi : Huh , chosen one? What are you talking about. I am getting totally confused, can you please explain the situation here.
Tama : Oh sorry, in excitement I totally forgot to introduce myself. I am Tama , I am from a different world called donkorie.
Satoshi : What???! You are from a different world??
Satoshi's internal monologue : What the hell is happening, this girl is from a different world. This sounds like one of those reverse isekai anime where the fantasy characters come to Earth .
Satoshi was a big Otaku.
Satoshi : OK I understand all that but what do you want to imply by calling me the chosen one.
Tama : In our world there is one enormously guy name Dark . He currently rules the whole of Donkorie. But many years back there was a prophecy made in our world that, the one who will be born when all the nine planets come together in one straight line will be the one to annihilate Dark and will become Dark's mortal enemy.
Satoshi's internal monologue : What does that mean I will be a protagonist of an real life isekai series. Oh God today is my luckiest day YESSSSSS.
Satoshi: OK but how do you know that it's me ?
Tama : Because the only the person who is born on that day can read this book and learn art technique like this. Dark was also born on a day like that and that's why he is the strongest in Donkorie. And since you are like Dark than you were definitely born on the same type of day and hence you can become equally strong as Dark or even Stronger than Dark .
Satoshi : OK that makes sense, but we can't be sure about this until I finish reading the whole book . But can you explain what is this art technique of yours .
Tama : Jeez , what kinda idiot are you even after reading this book , you don't know anything about art technique.
Satoshi : Hey can't you be a bit nice . how am I gonna know anything about a completely different world. If you can't speak nicely with me than I won't help you in any way.
Tama : OK ok I am sorry. Now listen in our world of Donkorie there is a special art called art technique by using which you can manipulate reality and the whole plane of existence within a certain proximity .
Satoshi : So it's basically like the magic of you world.
Tama : It's not magic , it's called art technique.
Satoshi : OK ok I understand it's called art technique.
Tama : Yeah that's better . You better not forget the proper name .
Satoshi : OK than I will start reading the book. Judging by its size it will take me around a month to finish reading it completely .
Tama : A WHOLE MONTH !! we don't have that much time, try to finish it within a week .
Satoshi : ARE YOU CRAZY!! I don't have the luxury to use all the 24 hrs of a single day . Ok I will try to finish it within 4 weeks .
Tama : 2 WEEKS NOT MORE THAN that !!
Satoshi : FINE FINE 3 WEEKS.
Tama : OK fine than 3 weeks it is but don't take more time than that .
Satoshi : OK I promise, I will not take more than 3 weeks.