The story revolves around a high school student named Mizuki, who develops feelings for her senior—a boy with striking looks and a gentle heart. As their relationship deepens, Mizuki gradually discovers that her senior is a transgender individual. The film delicately portrays their journey as they navigate societal pressures, internal struggles, and the process of being honest with each other. Through mutual understanding and personal growth, the characters learn to embrace their true selves. The title "After the Rain" serves as a metaphor for hope and reconciliation, highlighting the theme of finding light amidst adversity. With its nuanced exploration of identity and acceptance, the narrative offers a poignant reflection on resilience and the transformative power of love.