She was raised to be on this point, since aliens colonized humans, they forced them to be raised for the only purpose of performing and singing for them, but their lives were in the line, humans had to compete with humans for survival, if the crowd liked your performance, you live, but your oponent dies, until you either won everything, or died in the process.

After Mizuki's dissapearance after her snapping on stage and hitting her opponent, Kanade had been interrogated due this, she was devastated, because Mizuki was her friend and crush, but understood the reasons why Mizuki did that, after all, she competed with her bestfriend, Ena, and Mizuki had to watch her died

After another beating of the supervisors/aliens, she had to wait until the next competiton, who was Mafuyu, her friend, she lost her determination, and was feeling depressed and no longer with the will of perform for survival

"..." she looked throught the glass at the stage, with a hand on it, waiting for her time to perform against Mafuyu, with no will of it, she didnt wanted to lose someone else