Junta Nakao (中尾 順太, Nakao Junta) was a student in 9th Grade Class 3 in 1998, and a member of the countermeasures group led by Izumi Akazawa in the Yomiyama North Middle School.

Junta was a tall, fair-skinned young man with broad shoulders. He has short black hair and small black eyes with fine eyebrows. He wears the male school uniform, and his casual clothing consists of a black tank top, ocher pants, and black shoes. As a swimsuit, he wears a pair of navy blue shorts.

In the manga, Junta is shorter, has longer hair in a bowl-cut, and is stockier.

In the anime, Junta was perhaps Izumi's closest friend after Takako. The three are often together, discussing the curse and Izumi's attempts to combat it, though whether Junta is a member like Takako is doubtful. Junta seems to harbor feelings for Izumi, as when she stated she wanted to go to Tokyo for high school, he rightly assumed this was to stay close to Kōichi and angrily glared at him. He seems to be fairly close to Takako as well (perhaps being her only other friend in the anime). This relationship seems more genuine, as Takako was the only member of their group who expressed concern when Junta appeared to be car sick; Izumi was merely sarcastic and used his illness to trick Naoya into riding with Takako so she could be alone with Kōichi.

Junta appears otherwise to be a fairly laid-back individual who gets along well with the other boys in his class, even Kōichi, aside from the occasional bouts of jealousy towards Kōichi. He and Naoya seem to be quite friendly as well. However, he is shown to be somewhat careless, as shown when he could have requested medical attention after having suffered a fall, instead of leaving without any care or precaution (a fact that would later cost him his life)

In the manga, Junta is described as a loyal retainer of "Queen Akazawa" and usually accompanies her and her other followers. The rest of the class seems to find this (and him) rather pathetic.

Junta was present for Kōichi's first day of class, though, like the countermeasures group, he didn't welcome his new classmate. He was instead speaking with Yumi Ogura and Takako near the latter's desk. After Yukari Sakuragi's death, he and Takako spoke to Izumi about the curse. Junta expressed disbelief at the stupidity of the school's administration for putting a new student in their class. Junta often went on breaks with Izumi and Takako, and could be seen talking with them, presumably about the countermeasures.

In "Hair Stand", he went with Kōichi and the others to meet Katsumi Matsunaga, as part of his attempts to help Izumi with the countermeasures. Junta, however, was ill from the beginning, though by the time the group went to the beach to relax, he seemed to have mostly recovered, though he spent most of the day asleep in the shade. When it was time to leave, a sudden gust of wind blew Takako's volleyball into the ocean. Junta volunteered to recover it for his friend, but before he'd gone halfway, he began to have trouble swimming. Naoya first noticed their classmate was in danger, and he, Kōichi, and Katsumi rushed into the water to save him. They were, unfortunately, too late, as a passing speedboat struck Junta in the water and eviscerated him. The violence of his death shocked the group, especially Takako, who was devastated by her friend's horrific end. It also shocked Katsumi out of his PTSD, allowing him to remember where he'd hidden his tape regarding the 1983 calamity.

While it was thought the boat killed him (meaning the curse had spread beyond Yomiyama), it was later revealed in "Body Paint" (by Chibiki) that before leaving for the beach, he hit his head on the stairs at home back in Yomiyama, resulting in an aneurysm (hence his car sickness), which burst as he swam after the ball. Junta was dead before the boat hit him.

Later, he appeared in Kōichi's guilt-driven nightmare. He flopped down in front of a horrified Kouichi and blamed his death on his classmate.