TV-Series
Description
Juna is a character from the anime Futari wa Pretty Cure, serving as one of the primary antagonists. He is a member of the Seeds of Darkness, the group of villains who act as the main adversaries following the defeat of the King of Darkness.

Juna is the first of the three Seeds of Darkness to awaken. His origin is tied directly to his nature as a seed; it is shown that as he germinated and grew in a meadow, all the surrounding flowers withered and died around him, symbolizing his inherent connection to darkness and decay. He eventually took on a human identity, assuming the name Kakuzawa Ryuichiro. In this human guise, he worked in an office and was depicted as a very tall, serious individual whose expression seldom changed, most often appearing with a frown. His awakening as a seed of darkness is triggered while he is at work, where he feels a strange presence within his body and sees a cyclone approaching. He leaps out of a window, transforming into his true form for the first time. Following this transformation, he disappears from the memories of all the people who knew him as a human.

In terms of personality, Juna is characterized as being quite stoic and the muscle of the Seeds of Darkness. He is the most physically imposing of the group and his expression rarely changes, reinforcing his role as the strong, silent type. Despite his intimidating presence, his motivations are not purely evil for its own sake. Along with his fellow seeds, Regine and Belzei, his primary goal is to secure the Prism Stones and use their power to confront and defeat the King of Darkness. They seek to do this to become masters of their own destiny and avoid being absorbed by the king, indicating a desire for autonomy and self-preservation rather than simple servitude.

Juna's role in the story is that of a direct combatant against the Pretty Cures. He uses his power over the wind in battle. His strength is considerable; he fights the Cures to a near draw in his first encounter. Later, when the Seeds of Darkness capture Cure White, he attempts to fight Cure Black, but is swiftly defeated when she loses control and unleashes her full power against him. His key relationships are with his fellow Seeds of Darkness, Regine and Belzei, with whom he operates as a trio. Their shared goal of defying the King of Darkness ultimately leads them to fuse together into a single, more powerful being whose body becomes dark black. In this combined form, they battle the king, but are ultimately defeated and absorbed along with the Prism Stones they had collected. His development follows the arc of a villain who initially seeks power to break free from a greater evil, only to be consumed by that very force in the end. Juna's notable abilities include his superhuman strength, his control over wind, and the capacity to fuse with his comrades to create a single, more powerful entity.