Movie
Description
Born March 20, 1995—the day her older sister Momoka perished in a terrorist attack—Ringo Oginome's life began amidst family fracture. Her parents divorced soon after. She resided with her mother, Eriko Oginome, in a Higashi-Kōenji apartment, enduring neglect as Eriko's work frequently forced cancellations of their Curry Day tradition honoring Momoka. Visits with her father, Satoshi Oginome, offered little solace; he prioritized his new family, deepening Ringo's abandonment. Never knowing Momoka (who would have been 26), Ringo grew eclipsed by her sister's memory, convinced replacing Momoka could mend her family.

Attending Ohka Garden Girls' High School, Ringo presented as ordinary but concealed an intense fixation. Since age 11, she nurtured a one-sided obsession with Keiju Tabuki, her brothers' homeroom teacher and Momoka's close friend. This fixation spiraled into stalking, including hiding in Tabuki's home. Interpreting Momoka's diary as a guide to destiny, Ringo believed they were fated. Its entries convinced her fulfilling Momoka's unfulfilled wishes—like bearing Tabuki's child—would reunite her family. She pursued this relentlessly, attempting to drug Tabuki and Shoma Takakura, and orchestrating a near-sexual encounter with Tabuki aborted by her own confusion.

Her interactions with Shoma Takakura started transactionally: she leveraged the diary (the Penguindrum) to compel his aid. Initially antagonistic, Ringo dismissed Shoma's discomfort until he saved her from a car accident. Spending time with the Takakura siblings, she found acceptance and belonging—helping with chores, bonding with Shoma and the ailing Himari. Their familial warmth starkly contrasted her home, diminishing her Tabuki obsession. Genuine feelings for Shoma emerged, complicated by his guilt over his parents' suspected role in Momoka's death.

A turning point came when Ringo recognized her "love" for Tabuki was merely emulating Momoka. She apologized; he forgave. Shifting from self-destruction, she supported the Takakuras as Himari declined. In the climax, Ringo learned the "Transfer Fate" spell—altering destinies at personal cost: minor changes caused injuries, significant ones risked death. When Shoma sacrificed himself using the spell to save her, he confessed his love before vanishing. After this loss, Ringo and Himari formed a new family, living together—symbolizing Ringo's transition from isolation to connection.

Her name, meaning "apple" in Japanese, alludes to fate's symbolism. Ringo's journey illustrates moving from fractured identity to self-acceptance, resolving her need to become Momoka by forging her own path.