Shidai-daka (Ever-Rising Tall One) - Yokai Encyclopedia

Basic Description

A human-shaped apparition that appears on the road and grows taller the more you look up at it, looming to impossible heights. If you lower your gaze, it shrinks; look down far enough and it vanishes. Told across the Chūgoku region—especially in Shimane—it’s considered akin to mikoshi-nyūdō and other “the more you look up, the bigger it gets” yokai. Standard countermeasures are to never look up or to peer at it from between your legs.

Folklore & Legends

Around Gōtsu in Shimane, travelers say you can avoid harm as long as you don’t tilt your head upward. In Kawado, Sakurae (Ōchi District), it disappears if viewed from between one’s legs. In Gōtsu, hunters keep one last bullet ready for the Shidai-daka; in one tale, when shot, it proved to be a shapeshifted nekomata. On Mt. Sanbe, a related marvel called the “Shidai-zaka” makes an entire road rear upward, a motif thought to have mingled with Shidai-daka in both name and content.

Yokai Cards1

Shidai-daka (Ever-Rising Tall One) across multiple art-style decks

Card gallery

Collection Inclusion

This yokai is included in the following collections:

Colossal Yokai

A curated look at Japan’s colossal yokai—Gashadokuro, Umibozu, Daidarabocchi—and their overwhelming, mythic scale.

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Detailed Analysis

A baseline profile of Shidaidaka as a roadside, look-up-type apparition recorded across the Chugoku region. It resembles a human silhouette with head and shoulders dissolving into darkness, and its height stretches or shrinks in response to one’s gaze. Harmfulness varies by tale, but fear intensifies through the act of looking up. Countermeasures include keeping your gaze lowered, watching the ground, or peering between your legs, which causes the figure to diminish and dissipate. It is linked to the Mikoshi-nyudo, and tales of the similarly named “Shidai-zaka” are viewed as slope or mountain-path variants. Hunter stories connect it with the nekomata, and identifications differ by locale. Creative embellishments are common, but the core taboo warns that one’s gaze amplifies the phenomenon.

Character Profile

This section is our own creative profile for storytelling. It is not historical fact or scholarship.

Yokai Type: Traditional Yokai
Category: Mountain & Wilderness Spirits
Rarity: Uncommon
Personality: often silent, often emotionless
Compatibility: appears to curious travelers, appears to those walking at night
Abilities: height expands or contracts in response to the gazeblocks the path to intimidate travelersappears at night as a humanoid shadow
Weaknesses: a downward or overlooking gaze, peering between the legs, avoiding eye contact
Habitat: mountain paths and passes, roads on the village outskirts, slope-legend sites around Mount Sanbe

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