Shun, a young boy living with a life-threatening egg allergy, navigates a world where vigilance is his constant companion. His family enforces rigorous safeguards—meticulously preparing allergen-free meals, instructing classmates to avoid even casual exposure, and scouring environments for hidden risks. Each day demands carrying emergency medication and negotiating obstacles like school excursions, where meticulous planning becomes essential for survival.

When his parents are away, a routine treat turns perilous: altered ice cream ingredients introduce egg proteins into his system. Hives erupt, breath tightens—anaphylaxis strikes. With adrenaline surging, Shun jabs himself with an epinephrine pen and races toward emergency aid, the crisis starkly underscoring his fragility.

Emerging from the ordeal, Shun volunteers for an experimental immunotherapy trial, determined to rewire his body’s defenses. His tenacity extends beyond the lab—he dreams of traversing continents and even galaxies, his spirit undeterred by the confines of allergy protocols.

Years of hypervigilance have etched both invisible scars and palpable strain on his family bonds, while societal systems often lag in accommodating his needs. Yet Shun’s journey pivots from reliance on external safeguards to seizing control—a testament to resilience forged through vulnerability.