Pureblood

Purebloods are an elite race of demons that are the offspring of two demons. Currently, the only two who exist are Mugoi and Mujihi Kibutsuji.

Creation
Although it isn't clear how Mujōna Kibutsuji was able to conceive, there are a few conclusions:


 * Blue Spider Lily increased fertility
 * Only suitable mate for Muzan Kibutsuji
 * Her unknown species

Powers and Abilities
Because Mugoi and Mujihi Kibutsuji are still young, their abilities are still developing, but there have been strange occurrences.

As newborns, the twins displayed remarkable strength, but it is said by Mujōna Kibutsuji that Mugoi is much stronger than his brother.

The twins had a habit of tugging one's hair and squeezing/breaking one's nose. When he was an infant, Mugoi was strong enough to break Gyomei's nose.

As an infant, Mujihi displayed some physic ability that's reminiscence to hypnotism/mind control. This was revealed when he had a nursemaid under his mesmerizing trance, and the nursemaid was unable to hear Mujōna speaking to her audibly or telepathically.

Another incident of Mujihi's physic ability was when Nodoka looked into his eyes too long and suffered a massive, severe headache.

Trivia

 * Purebloods can't eat human food.