Milim Nava/Relationships

Karion
They were Demon Lord fellows, though after being defeated by Milim and confirming he's still too weak to be among the Demon Lords, Karion decided to step down and become Milim's subordinate. Afterward, he occasionally became a punching bag for Milim to vent her stress even though this  as his "training from hell" to become stronger.

Frey
They were Demon Lord fellows and were quite close to each other, to the point of plotting together to overthrow Clayman. After the Walpurgis Banquet that ended with Clayman's death, Frey confirmed herself to be too weak among the Demon Lords and decided to step down and become Milim's subordinate. Ever since then, she would serve as a nagging secretary to Milim as she would drag Milim back to work and studies whenever she lazes around.

Dino
As the Overseen of the Angels, (later the Celestial Demons) and devout subordinate of his creator Veldanava, Dino was given the task to be Milim's guardian angel by Frey after the Tenma Great War. However, because of his laziness, he actually takes advantage of Milim wanting to play in Tempest by going with her to slack off under the excuse of watching over her.

Rimuru Tempest
She and Rimuru became close friends over the course of her two weeks stay in Tempest. Shortly after her arrival, Rimuru gave her "Dragon Knuckles" to inhibit her power so she wouldn't hurt or kill any of his citizens accidentally. Since then she rarely takes them off, so when Rimuru made her do so while she was eating, Milim sulked for the entire day. They have become so close to the point that she was willing to pretend to be under Clayman's control in order to expose his plot and help Rimuru. This close friendship can be assumed to give birth to "love" within Milim in regards to her feelings towards Rimuru.

Gobuta
Milim was astonished by Gobuta's display during Tempest Tournament due to his "cool" transformation by Uniting with Ranga. However, He disappointed her immediately by crashing himself out of the arena and losing the match pathetically and instantly the moment it started. In anger, she dragged him out for "Hellish" training.

Others
Guy Crimson and Ramiris: The three of them are the first Demon Lords and have been acquainted with each other for thousands of years. Milim later became a closer playmate with Ramiris due to Rimuru's influence.