Kazuya

Kazuya (Ryuu, he goes by his middle name) was a beta tester for SAO, but he did not get the game immediately after it came out officially. What caused him to enter the game was actually the death of his friend. She was his closest friend and one day he went to the hospital after school, to find her being unhooked from all the machines. She was gone. Upon finding this out, he decided to use his skill at fighting to prevent at least a few people from feeling that pain. Against his parents wishes, he downloaded the game and entered it to try to help bring an end to it all.