Untitled Story Part

It is a story about a boy who wants to go outside the walls with his friends so that he can explore the outside World
Then there comes a girls named Mikasa that want to be stronger so that she can be independent and she always fights with eren , she lost his he parents at the age of 8 than she starts living alone near the house of Jaegers
And there is a boy who also wants to go outside to explore the world and he always reads his books, he lost his parents at very young age and he lives with his grandfather.