Ryuhime Kashin/Relationships

Levi Kazama - As former acquaintances, Ryuhime would reunite with Levi during her pursuit for the Mythical Weapon Murasame. In particular, Ryuhime is competitive towards the Trinity Seven, often declaring that she will defeat the ninja. However, despite her confidence, the Gold Dragon Sorcerer respects Levi's strength, as well as being quite knowledgeable about her abilities and vice versa. Notably, they were both candidates for the position of the Trinity Seven of Invidia, although Levi would ultimately receive the title.

Ryuki Kashin - Ryuki is Ryuhime elder sister, and also seems to care for her in her life. However this was only on the surface, in truth Ryuki was only interested in Levi for her strength, and she doesn't care for Ryuhime at all. Although Ryuhime on the other hand does care for Ryuki despite her not being even human anymore. When she was killed by Levi prior learning what happened to Ryuki, she bore a deep grudge for Levi, and after learning what she became after her death, she still hated Levi, meaning that whatever the cost Ryuhime did care for her sister after what Ryuki has done all this time. In the end she accepted that her sister isn't human anymore and fought her. However even after her loss, Ryuki ignored Ryuhime till the very end.