Haru is initially timid as a result of Araya's bullying. He can, however, stand up for himself after meeting Kuroyukihime and acquiring Brain Burst, and help Kuroyukihime achieve her goals. Later in the story, he begins to admit that, aside from assisting her in reaching level 10 and learning the ...

Kuroyukihime, the Vice-President of the Student Council at Umesato Junior High School, is a mysterious and popular girl. She was just eight years old when she became a burst linker, and her Brain Burst Avatar is Black Lotus. She used to be known as the "Black King," but she went into hiding after ...

Fuuko is seen to be extremely nice to everyone she meets, including strangers. She is willing to help others even if she receives no compensation. Her eyes are usually melancholy as if she is mourning her separation from Kuroyukihime / Black Lotus unconsciously. She is a firm believer in the ...