President of the Neighbor's Club.
Yozora is a cruel and selfish black-haired girl who says she understands and respects bullying, but hates being called a bully herself. Her difficult personality drives away anyone who wanted to make friends with her before she meets Kodaka. She is physically abusive towards, and often argues with Sena and manipulative towards Maria, who she cons into giving up an empty room for the use of the Neighbor's Club. She fools Yukimura into working for the club as a crossdressing cosplay maid. The only person she can't insult is Rika. Rika takes whatever insult she gives and deflects it back with a dirty joke and that leaves her tired. Yozora just does what Rika says (like crossdress for example) rather than argueing with her.
She is Kodaka's childhood friend, though at the time, he believed that she was a boy, calling her "Sora"; her nickname for him was "Taka." On the day that Kodaka moved, she intended to wear a skirt and reveal her gender to him but was too embarrassed to do so. Kodaka eventually recognised her after she had to cut her hair short due to it catching on fire. She seems to have feelings for Kodaka.