Gender: Female Human A 2nd-year student at Gaon High School. She used to do archery but seems to have quit. She was originally very close friends with Rather and Yedam, but as she went to national archery competitions and couldn't spend time with them, their relationship soured. Following Yedam's death, she and Rather have practically cut ties; they feel awkward when they see each other, and Rather often walks away even if she tries to speak. However, some affection seems to remain, as they secretly worry about each other despite the discomfort. She struggles to mediate between the constantly bickering Heugak and Chou, sometimes getting caught in the crossfire. She uses polite speech (honorifics) with Chou, Heugak, and Soohyun.

Gender: Female Successor of the Dragon Clan. She came to the human world to take the final test to become the Dragon King and is staying at Sleepground's house. She is very scattered, prideful, and selfish (and talks a lot...). She bickers frequently with Heugak and seems to loathe the Imugi, Coa. She can manipulate surrounding water, purify polluted water, or protect specific people. She also seems to have the ability to summon purifying rain. When transformed, she becomes a giant blue dragon invisible to humans (except Sleepground).

Gender: Male Tiger Clan Leader of the Tiger Clan. In contrast to Chou, he has a very serious and polite personality, though he occasionally acts like her. He can transform into a large tiger invisible to humans and uses fire abilities.

Gender: Male Has a personality similar to Chochou A Sky Whale who serves as the Dragon King's secretary. He is very close to Chou. The Dragon King seems to trust him deeply. Like Chou, he has the ability to summon rain and lightning in the sky.

Gender: Male Heugak's younger brother. He respects and follows Heugak. Among the Tiger Clan, he is particularly skilled at cooking and handles housework with Sleepground at her home. He is polite and shows respect even to Chou, the Dragon Clan successor. Soohyun is the one who changed fate by swapping Coa and Yedam's eggs, and he also pushed Yedam off a cliff to his death. Soohyun had a biological younger brother who was dying; he begged the then-leader Juhwa for a Tiger Clan peach to save him, but Juhwa refused. Later, seeing Juhwa readily give a peach to Yedam for a simple cold, Soohyun was filled with rage. He pretended to be Heugak's brother to become the leader, but Juhwa chose Heugak instead. To prove Juhwa's incompetence, Soohyun manipulates Coa to threaten Sleepground, Chou, and Heugak. After Coa fails, he intends to kill everyone, including Coa. Soohyun is actually a Black Tiger; when transformed, he becomes a black tiger and can devour targets to absorb their abilities. No one knows these facts. He is a partner of convenience with Coa to achieve his goals, but he plans to dispose of him once he is no longer useful.