OVA
Description
Yumemi Hidaka anchors the Munto franchise, starting as a Japanese middle school student. Since around age five, she uniquely saw floating islands in the sky invisible to everyone else. Accusations of lying from peers when she described these visions cultivated deep insecurity about her abilities. This led her to habitually carry a pink umbrella to block her view of the sky and prefer rainy days when the islands were hidden. Though childhood friends Ichiko Ono and Suzume Imamura believed her descriptions without seeing the islands themselves, she internalized the feeling of being abnormal.

Her life changed when Munto, ruler of the Heavenly Magical Kingdom, repeatedly manifested before her. She initially dismissed these encounters as hallucinations but gradually accepted their reality as he pleaded for her help saving his realm from collapse due to depleting Akuto energy. This energy, drawn from human emotions and dreams, linked both worlds, and Yumemi unknowingly held the key to restoring its flow. During early encounters, Munto's appearances caused spatial disturbances Yumemi perceived as explosions, and he struggled against a dimensional barrier that physically harmed him when he tried approaching her.

A pivotal moment occurred near the Kino River. Witnessing a premonition of a falling Heavenly island, Yumemi trusted her power despite uncertainty and breached the space-time barrier to grasp Munto's hand. This act temporarily stabilized the Heavenly Kingdoms, making the islands briefly visible to everyone on Earth and strengthening her self-confidence. Munto's subsequent disappearance left her concerned for his wellbeing.

Approximately eighteen months later, environmental chaos erupted on Earth through earthquakes and weather anomalies. Yumemi simultaneously experienced fragmented visions of Munto's painful past—his ostracization as a "cursed child" and the burdens of leadership. Touching a sacred rock at a shrine where she worked part-time intensified these visions, revealing Munto injured and unconscious. Her connection to him deepened, sparking mutual romantic feelings that manifested through blushes and protective instincts.

Actively seeking to aid him, Yumemi revisited their meeting place at a small bridge. Later, during heightened interdimensional instability, she consciously channeled her latent power. This culminated in her fully embracing her prophesied identity as the "Girl of Destiny" destined to bridge the worlds. In the final conflict, she reaffirmed her belief in herself, declaring her heart "safely with her" as she exercised her abilities to restore balance between the Heavens and Earth, fully accepting her unique role and emotional connection to Munto.