Hitorigami are kami

Kami

is the Japanese word for the spirits, natural forces, or essence in the Shinto faith. Although the word is sometimes translated as "god" or "deity", some Shinto scholars argue that such a translation can cause a misunderstanding of the term...

 which came into being alone, as opposed to those which came into being as male-female pairs. According to the Kojiki

Kojiki

is the oldest extant chronicle in Japan, dating from the early 8th century and composed by Ō no Yasumaro at the request of Empress Gemmei. The Kojiki is a collection of myths concerning the origin of the four home islands of Japan, and the Kami...

, this group included the "three deities of creation" and the "separate heavenly kami.". They are described as hiding themselves away once they achieved awareness. Most are said to have been created from the "male essence" and, as such, are male in gender.

Two hitorigami, Kunitokotachi

Kunitokotachi

In Japanese mythology, is one of the two gods born from "something like a reed that arose from the soil" when the earth was chaotic. In the Nihon Shoki, he is named "Kuni-toko-tachi no mikoto" and is the first of the first three divinities born after heaven and earth were born out of chaos, and...

 and Amenominakanushi

Amenominakanushi

In Japanese mythology and Shintoism, Amenominakanushi was the first kami to come into being in the Plain of Heaven as a "solitary kami" . He was acknowledged as one of the zōka sanshin and one of the five kotoamatsukami .Amenominakanushi is found at the very beginning of the Kojiki...

, summoned the divine pair of Izanagi

Izanagi

is a deity born of the seven divine generations in Japanese mythology and Shinto, and is also referred to in the roughly translated Kojiki as "male-who-invites" or Izanagi-no-mikoto. It is also pronounced Izanaki-no-Okami....

 and Izanami

Izanami

In Japanese mythology, is a goddess of both creation and death, as well as the former wife of the god Izanagi-no-Mikoto. She is also referred to as Izanami-no-kami.-Goddess of Creation:...

 into being and charged them with creating the first land in the swirling salt-water that existed below the heavens.

List of Hitorigami

Three Deities of Creation:

• Amenominakanushi
  Amenominakanushi
  In Japanese mythology and Shintoism, Amenominakanushi was the first kami to come into being in the Plain of Heaven as a "solitary kami" . He was acknowledged as one of the zōka sanshin and one of the five kotoamatsukami .Amenominakanushi is found at the very beginning of the Kojiki...
  
  
• Takamimusuhi
• Kamimusuhi

Separate Heavenly Kami (partial list):

• Umashiashikabihikoji
• Amenotokotachi
• Kunitokotachi
  Kunitokotachi
  In Japanese mythology, is one of the two gods born from "something like a reed that arose from the soil" when the earth was chaotic. In the Nihon Shoki, he is named "Kuni-toko-tachi no mikoto" and is the first of the first three divinities born after heaven and earth were born out of chaos, and...
  
  
• Toyokumonu