They have been best friends since freshmen year and was in the same class. Ouka's lack of perception leads to Yawakaze being placed in embarrassing situations. Despite that, both remain as good friends, even putting aside their rank differences.
Despite belonging to two different factions, they are shown to be on friendly terms with one another. During the deadline of the second mission, Konagi was protected by Kanade from a robber. Since then, she may have developed feelings for him because he protected her. However, their friendship usually earns Kanade the ire of the other students notably her bodyguards while Yawakaze apologizes for these instances.
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.