Japanese moon mythology centers on the moon deity Tsukuyomi, the rabbit who pounds mochi on the lunar surface, and the moon as a realm of the dead in the Kojiki and Nihon Shoki. These stories explain the moon’s phases, the separation of day and night, and why the Japanese see a rabbit—not a man—in the moon.
Tsukuyomi: The Moon God of Shinto
Tsukuyomi (also Tsukiyomi or Tsukuyomi-no-Mikoto) is the Shinto moon god. In the Kojiki (712 CE), he is born from the right eye of the creator deity Izanagi after Izanagi washes himself following a visit to the underworld. His siblings are Amaterasu, the sun goddess born from the left eye, and Susanoo, the storm god born from the nose. In the Nihon Shoki (720 CE), a variant text, Tsukuyomi is instead born from a mirror in Izanagi’s right hand.
Tsukuyomi’s most famous myth involves his fatal encounter with the food goddess Ukemochi. According to the Nihon Shoki, Ukemochi produced food from her mouth, nose, and anus to feed the gods. Tsukuyomi, disgusted by this, killed her. When Amaterasu learned what he had done, she was so angry that she refused to look at him again, moving to the other side of the sky. This is why the sun and moon never meet—day and night are forever separated.
Unlike Amaterasu, who is revered as the ancestress of the imperial line, Tsukuyomi receives little worship in Japan. He has no major shrine dedicated to him, and his cult is nearly absent from historical records. Some scholars suggest his role was largely narrative—to explain the sun-moon separation—rather than a focus of active devotion.
The Rabbit in the Moon: Mochi and the Lunar Hare
In Japanese folklore, the dark patches on the moon form a rabbit standing on its hind legs, holding a wooden mallet, and pounding rice into mochi (rice cakes). This image is so widespread that the Japanese word for “moon rabbit” is tsuki no usagi.
The origin story is told in the Jataka Tales, a collection of Buddhist stories. In one tale, a rabbit, a monkey, and a fox are tested by a god disguised as a hungry old man. The fox brings fish, the monkey brings fruit, but the rabbit, unable to find food, offers its own body by leaping into a fire. The god restores the rabbit and, to honor its sacrifice, paints its likeness on the moon. This story arrived in Japan with Buddhism and merged with local moon lore.
Another popular explanation is that the rabbit is pounding mochi for the moon festival, Tsukimi, which occurs in autumn. During Tsukimi, families display offerings of rice dumplings, taro, and pampas grass to the full moon, and children are told that the rabbit is busy making mochi for the celebration.
Kaguya-hime: The Moon Princess of the Tale of the Bamboo Cutter
The most famous Japanese moon story is the Tale of the Bamboo Cutter (Taketori Monogatari), written in the early Heian period (around the 9th–10th century). It is often called Japan’s earliest surviving narrative.
The story follows a bamboo cutter who finds a tiny, radiant girl inside a bamboo stalk. He and his wife raise her as their daughter, naming her Kaguya-hime (Princess Radiant). She grows into a woman of extraordinary beauty, and five noble suitors ask for her hand. She gives each an impossible task—such as fetching the stone begging bowl of the Buddha or the jeweled branch of the island of Horai—but all fail through trickery or misfortune.
Eventually, the Emperor of Japan himself falls in love with her, but she rejects him. In the final act, Kaguya-hime reveals she is from the Moon Capital (Tsuki no Miyako), sent to Earth as a punishment. The moon people descend on a chariot to take her home. She gives the Emperor an elixir of immortality, but he orders it burned on the summit of Mount Fuji—hence the mountain’s name, which some interpret as “immortal” (fushi) or “not returning” (fuji). The story explains why smoke once rose from Mount Fuji, and it ties the moon to themes of loss and unattainable beauty.
The Moon as a Realm of the Dead
In some Japanese traditions, the moon is associated with the afterlife. The Manyoshu, an 8th-century poetry anthology, contains verses that speak of the moon as a place where the dead reside. For example, a poem by Kakinomoto no Hitomaro laments that the moon remains bright while a loved one has departed, hinting at a celestial afterlife.
Buddhist cosmology, which influenced Japanese beliefs from the 6th century onward, placed the moon in the realm of Trāyastriṃśa, a heaven where the deity Śakra (Indra) dwells. However, this is not a place of permanent reward; it is still within the cycle of rebirth. Japanese folk religion also sometimes identifies the moon with the bodhisattva Jizō, who protects travelers and children, though this connection is less prominent than the sun’s association with Amaterasu.
The moon’s association with death is also seen in the custom of holding a tsukimi vigil on the 15th night of the 8th lunar month, which historically coincided with the autumn equinox—a time when the boundary between the living and dead was thought to be thin.
Tsukuyomi in Modern Media and Pop Culture
Tsukuyomi and the moon rabbit continue to appear in contemporary Japanese media. In the anime and manga Naruto, the character Itachi Uchiha uses a genjutsu technique called “Tsukuyomi” that traps victims in an illusion. In the video game Persona 4, the character Mitsuo Kubo’s Persona is named Tsukuyomi. The moon rabbit appears in the Pokémon series as Clefairy and Clefable, which are based on the lunar hare, and in the game Okami, the moon god is named Yumigami.
These uses show that the mythology remains a living source of symbolism. The moon in Japanese culture is not just a celestial body but a character—aloof, beautiful, and often tragic.
Comparisons with Other Moon Mythologies
Japanese moon mythology differs from the better-known Greek and Roman traditions. In Greek myth, Selene is a goddess who drives a chariot across the sky, and in Roman myth, Luna is her counterpart. The moon is female in most Indo-European traditions, but in Japan, Tsukuyomi is male. This gender difference is notable because the sun in Japan is female (Amaterasu), whereas in most other cultures the sun is male.
Another key difference is the moon’s role in judgment. In Greek myth, the moon is often associated with magic and madness (the word “lunatic” comes from Luna). In Japanese myth, the moon is more associated with purity and distance—Tsukuyomi’s act of killing Ukemochi is a moral failure, but the moon itself is not evil. The rabbit in the moon is a pan-Asian motif, also found in Chinese and Korean folklore, but in Japan it is specifically linked to mochi-making, reflecting local food culture.
Common Questions and Misconceptions
One common misconception is that Tsukuyomi is the equivalent of the Greek Selene or the Roman Luna. While he is the moon deity, his mythology is minimal—he appears in only a few passages in the Kojiki and Nihon Shoki. He has no major myths of his own beyond the Ukemochi episode.
Another misconception is that the moon rabbit is unique to Japan. In fact, the rabbit in the moon appears in Chinese mythology (where it pounds the elixir of life) and in Korean folklore (where it is a symbol of longevity). The Japanese version is distinctive because the rabbit is making mochi, not an elixir.
People also ask whether Tsukuyomi is still worshipped. The answer is no—there is no major shrine dedicated to him, and his worship is virtually nonexistent. This contrasts with Amaterasu, who is enshrined at Ise Grand Shrine and remains central to Shinto practice.
Frequently Asked Questions
Why is there a rabbit in the moon in Japanese folklore?
The rabbit in the moon comes from a Buddhist Jataka tale about a self-sacrificing rabbit who offered its body to a starving traveler. The god Indra (or in some versions, Śakra) placed the rabbit’s image on the moon as a reward. In Japan, this story merged with the local custom of making mochi, so the rabbit is depicted as pounding rice cakes.
Who is Tsukuyomi in Japanese mythology?
Tsukuyomi is the Shinto moon god, born from the right eye of Izanagi. He is the brother of Amaterasu, the sun goddess, and Susanoo, the storm god. His only major myth involves killing the food goddess Ukemochi, which caused Amaterasu to separate from him forever, creating day and night.
What is the Tale of the Bamboo Cutter about?
It is a Heian-period story about Kaguya-hime, a moon princess found in a bamboo stalk. She grows up on Earth, rejects suitors and the Emperor, and is finally taken back to the Moon Capital by celestial beings. The story explains the origin of Mount Fuji’s smoke and is considered Japan’s oldest surviving narrative.
Is Tsukuyomi the same as the Greek moon goddess Selene?
No. While both are moon deities, Tsukuyomi is male and has a very small mythology. Selene is female and has a rich mythology involving lovers and chariot rides. The Japanese moon is also not associated with madness or magic as strongly as the Greek moon.
Does the moon in Japanese myth have any connection to death?
Yes, in some poetry and folk beliefs, the moon is a place where the dead reside. The Manyoshu contains poems that hint at this, and Buddhist cosmology places the moon in a heavenly realm. However, this is not a central theme—most Japanese moon myths focus on separation and beauty rather than an afterlife.
Why is the moon god not worshipped in Japan?
Tsukuyomi’s lack of worship is likely because his myth is short and he does not play a role in the imperial lineage, unlike Amaterasu. His only act—killing Ukemochi—is seen as a moral failure, which may have made him less appealing as a deity. Historical records show no major shrine dedicated to him.
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