An angel who is the student council president at the Afterlife School.
Kanade is constantly at odds with the Shinda Sekai Sensen (Afterlife War Front).
Due to her position as student council president, it is her duty to try and keep the members of SSS in order, and to put an end to their delinquent behaviour. It's because of this that she earns the name 'Angel', as the SSS believe she is trying to make them disappear by obeying the rules, and that she is carrying out the will of god.
Kanade doesn't often show emotion. She is powerful, despite her appearance, and hosts a variety of abilities developed for battling the SSS.
It is later revealed that Kanade is actually a human, and not an angel. She developed her abilities using the same system the SSS did for their weapons.
She is often with Yuzuru in the latter stages of the series, and quickly becomes a trusted friend to him. She willingly helps Yuzuru in his task of getting people to move on from that world.
In the final episode, Kanade helps to organise a graduation ceremony.
When she is alone with Yuzuru, he asks her if she'd like to stay with him in that world forever, to help all of the people that arrive there. She reveals that she accidentally stumbled into this world looking for the person who saved her life. It turns out that Yuzuru's heart is what saved her when he placed his name on the organ donor's list before his death, and that her one regret was not being able to thank him in person.
Yuzuru confesses his love, but Kanade is afraid that she will disappear if she responds to those feelings. In one, final, emotional moment, Yuzuru takes Kanade in his arms and repeatedly tells her that he loves her, whilst being reduced to tears. She thanks him for loving her, and then disappears from that world.
After the final end credits, Kanade is seen on a busy street in the real world, humming 'My Song'. Yuzuru passes her and stops. He reaches out to tap her on the shoulder before the episode fades out to a close.