Pench Eliza is one of thirteen children stranded aboard the training combat ship Janous following a hostile alien attack on the human colony Clayad. She journeys with the group as they attempt to return to Earth across multiple official media installments.

Characterized prominently by anxiety over their perilous journey, particularly in the sequel series, this manifests when Pench secretly responds to a mysterious Lapis transmission against the group's collective decision to ignore it, fearing an enemy trap. Her unilateral action coincides with an immediate enemy attack, heightening suspicions that her contact triggered or enabled the assault.

Later, Pench participates in rescuing and caring for Kuktonian twin babies, the sole survivors of a destroyed enemy station. Alongside Sharon, she nurtures the infants. When the twins fall ill due to Janous system failures, Pench witnesses Lapis member Doa risking her life during combat to make repairs and Anne nursing the sick babies. These acts contribute to Pench and the others gradually overcoming their distrust of Lapis. Her shared experience protecting the twins influences the group's collective decision to return the infants to their father, enemy commander Lurdo, when his forces threaten the Janous. Returning the babies leads Lurdo to allow the children to proceed unharmed.

Pench remains with the group as they travel towards Tuat (also called Tout), the artificial satellite of the alien homeworld Kukto, believing their parents are held captive there. She endures subsequent challenges alongside them, including becoming stranded on a planetary surface after a shuttle failure and confronting the despair of finding a supposed human base in ruins. Her experiences reflect the narrative's broader themes of survival and cooperation.