I am looking for a manga about a boy who one day got a love letter from a girl called haruna (might be the girl's name) to meet on the rooftop. He was told that he was the savior of her world. The girl took him to her world and found that her world was dying.
I am looking for a manga about a boy who one day got a love letter from a girl called haruna (might be the girl's name) to meet on the rooftop. He was told that he was the savior of her world. The girl took him to her world and found that her world was dying.