She comes over the world.
She feels the world and friends.
She become separated from precious friend.
The subject moves to the story of she and she/he.
She knows the world and despair of her/him heart.
She become emotional support for her/him.
For the last, pile up their relationship carefully earmestly.
『Haibane Renmei』and『Wish upon the Pleiades』who are the animated cartoon which oneself was impressed by very much think that story structure.