Why

An ordinary boy named Aldrich Hearoid met a positively gay girl mysteriously named Cosmos Mockingwind. And he thought for the first time he was finally happy just to be beside Cosmos. He thought it was just perfect. But when he thought his life was perfect, fate was coming around faster than anybody would expect. And it said that he was the key to Cosmos' salvation. When he was about to ask Cosmos what it'd meant, somehow a magical barrier went around him and saw what his dear brother was about to do. He saw Cosmos lying on the ground with his brother piercing a dagger straight through Cosmos' heart. Then, magical creatures from the sun and the moon meticulously appeared from nowhere. He went running to the scene where they appeared. And saw that it came from Cosmos's lifeless body. She was dead. He looked at his brother and a look of sorrow and sadness was written on his face, almost like it pained him for killing her. A million thoughts came into Aldrich's mind, wanting every each one to be spoken but all that came out his mouth was, 'why?'