Hoshio Yumeno, revered as Starzan S, reigns as the guardian deity of Kirakira Planet’s Senobi tribe. A free-spirited 18-year-old possessing extraordinary athleticism, he shifts into a strikingly mature, chiseled six-head physique when near Jun Yagami—a transformation straining his stamina, though Jun soon discerns its toll.

Born on Earth to Paratopia explorers Kunio and Sonoyo Yumeno, he was stranded on Kirakira as an infant during their vanished mission. Plucked from feverish peril by Ebiten Senobi’s family, he grew woven into the tribe’s fabric, embraced as one of their own.

The diminutive Mutan, an alien fugitive clinging to his shoulder, acts as his sentinel, sensing Jun’s distress across vast distances. Though reminiscent of another universe’s creature, Mutan stands unique here.

Hoshio’s fate intertwines with Jun’s hunt for her father, Mamoru Yagami, who once led the same ill-fated expedition as his parents. Together, they unearth his Earthborn lineage during a pivotal Earth visit, exposing ties to Paratopia’s shadowed past. Guided by Senobi elder Nobiten, they navigate the planet’s perils while clashing with the rival Kariage dynasty, spearheaded by the cunning Evilus Kariage, who covets both Jun’s favor and Paratopia’s secrets.

Kunio and Sonoyo, physician-pioneers obsessed with Paratopia, left a legacy mirroring Hoshio’s transformed visage—Kunio’s likeness emerging when glasses-free. Their absence fuels his crusade to mend tribal strife between the Senobi and the mechanized Robot Tribe, commanded by Darth Bello—later unmasked as missing patriarch to Kariage matriarch Maneko.

Balancing levity with lethal precision, Hoshio thwarts robotic onslaughts and Kariage schemes alike. His bond with Jun blossoms from fleeting admiration into a shared odyssey, driven to unveil their families’ entwined destinies and Paratopia’s buried truths.