They have been best friends since freshmen year and were in the same class. However Ouka's lack of perception and wild behavior, tends to lead Yawakaze being placed in embarrassing situations. Despite that, both girls remain good friends, even putting aside their rank differences to hang out with no problems. Also, both girls are shown to have feelings for the same boy
Despite belonging to two different factions, they are shown to be on friendly terms with one another even if his curse hampers with their interaction. During outing with him and Ouka, the of his second mission came up but Konagi was protected by Kanade from a robber who was moving to attacking her and she may have developed feelings for him because he protected her from harm.
Her feelings for him are hinted as she was okay with him staring at her swimsuit at the waterpark and was worried for him after he was woozy from a ride on the roller coaster. However, their friendship usually earns Kanade the ire of the other students notably her bodyguards while Yawakaze apologizes for these instances.
Kanade is oblivious to her affections but he considers her a sweet girl while being amazed and often guilty by her pure and innocent personality.
It was shown in episode 4, that due to her sweet and innocent personality as well her student rank, Yawakaze has gained a group of admirers who swore to protect her reputation from being sullied. Whenever anyone or mostly Kanade gets too close to her, the guards would appear and proceed to violently beat him for believing he and Yawakaze are close friends. In episode 10, they beat up Kanade before attacking another man who attempted to make advances on her.