Mamiya Yorun/Relationships

Demon Lord Knights
Patricia Caesar - The leader of the Demon Lord Knights, Patricia and Yorun have a good relationship between her. She obeys her leader orders, which she rarely gives, thus considering her just a friend similar to all the Demon Lord Knights. Yorun was the only one who didn't hurt her when she was under her armor influence, despite being petrified by Inori. She finds Patricia was the one who changed her isolated life, and after that she is always seen with her laughing, smiling together.

Suiten Inori - Although Inori apathetic and ruthless nature, Yorun was the only one she didn't petrify, when Inori petrified the whole school into stone. Yorun was the one who brought her to her senses, after protecting her from Ana's slash, severly injuring Yorun, much to the surprise of Inori even before she told Yorun to run away when she was overpowered by Ana and Astral Trinity. Showing signs of caring. When Inori was a human she was the one who invited her to become friends with her along the rest of the Demon Lord Knights. Much later Inori would join the group, becoming friends with her and the rest of the Demon Lord Knights as well.

Yumegaya Chris - Chris and Yorun are mutual friends, and never been on bad terms with her ever, due to Chris kind nature. She was also the one other than Patricia who pulled her from her lonliness. They are always seen together and interact normally. They would help each other with the rest of the Demon Lord Knights.

Others
Anastasia-L - Yorun has been giving the mission to eliminate Ana, the traitorous Saint whom she sealed Demise away. However since Inori incident, she didn't play much part and instead defeated by Astral Trinity. And later slashed in the back by Ana, defeating the Knight. She would later become friends with Ana, and she knew that Pandora has a grudge against Ana. She was the only one among Demon Lord Knights, to put herself in front line and risk her life to save Ana from Pandora. Much later Ana herself became demonized, and tried to slaughter Pandora and the Demon Lord Knights. In the fight she became severly injured nevertheless she didn't gave up. Resolving to save her friend, which later Pandora succeeded in doing so. Upon leaving the school, she told Ana to take care of her self.

Lilith Asami - Lilith is her teacher at the school, she did cooperate with her plans on every incidents, knowing that she's smart. She doesn't want to cause Lilith much trouble, and would try to hide it as much as possible. Lilith and Yorun doesn't interact much, but she agrees and goes with her plans. They are good friends sharing the same ideals with the other Demon Lord Knights. They find her a master strategist. Even though she is her teacher she doesn't really care and just want to be friends with each other.

Arata Kasuga - When Arata was reincarnated as a child and accidentally saw all the four Demon Lord Knights naked in bath, although she remained silent at the time, but later revealed she was actually angry at being seen naked by him. Currently she is one of the teachers tutoring him at hiding his presence from the enemy. Although she very much hates his perverted attitude, she nevertheless saved him from a sent assassin from the goddess. And would later agree with the rest of the Demon Lord Knights, to give him a Demon King Gift.