Zygaena is a massive Shinheuh used as a "living arena" for team tests on the 21st Floor.


The creature is considered sacred by many residing the 21st Floor. Its appearance closely resembles that of a tortoise with no shell, with the exception of two blowholes in the centre of its belly and back, a long stingray-esque tail, two horns and a mouth full of sharp teeth. It periodically flips over, in order to "sunbathe". Whenever it surfaces, Zygaena will blow water through one of its blowholes. Its innards are accessible through the two blowholes and provide more than sufficient space for Regulars and Rankers to enter its body.


Baby Zygaena

There is a special "jewel" that only grows inside of a Zygaena, which comes from the centre of "Zygaena's Flower". It is extremely valuable, as it grows only inside of Zygaena and is considered one of the best jewels due to its beautiful colour. Because of this Ziguenas are classified as endangered species on the 21st Floor. However, this "jewel" is also the nutrition for Zygaena's babies. In order to protect the value of the jewel, the Yeon Family stopped all babies from growing by harvesting the Flower of Zygaena.

Because of Jaina Repellista Zahard's whims, Yuri Zahard requested for Urek Mazino to take a baby Zygaena away in order to make the jewel more common in the future.

Images Gallery

Alternative translation


  1. Vol.2 Chapter 29


Special Groups
Special Entity
Under Guardians Exception
Hell Train
Train Staff
Artificial Characters
Data Humans
Special Races
The Bull
AngelBaylord DoomBaylord PaulBaylord YamaBerdychBongsoBuelsar ElliotButlerCanhongCanzonChang BlarodeCuldenDeng DengDu TongGadoGrandeGyugungJordanKatuLouieLukaRR's TwinRianRolandRon MeiRuel MonTallVaragarvVenti
Rabbit Ear
AiHwa Ryun • Dead Witch Corpse
Ancient Power
Community content is available under CC-BY-SA unless otherwise noted.