Tsuki Aoi

Sora's best friend. She is the reason behind Sora's goal to be a knight. She's strong and smart. She is El's possession, thus abling her to collect information about Exclan to help Sora. She is also 'X'. The first weapon Sora used who wears a mask with a flower ornament and golden hair. Though later replaced by Shoujo to extract information from Sora. It is also hinted that she is the reason why Sora was able to play the game despite being a girl. It is assumed that she is the one who anonymously gave the glove to Sora.