Rumane Yasahute once lived in the warm glow of her brother Renji’s dream. He aimed to become a brilliant pharmaceutical researcher, and she followed him like a shadow, watching him study late into the night and vowing to walk the same path. They were inseparable, bound not only by blood, but by a fragile hope of shaping a kinder future together.

One year before high school, everything shattered. Renji died in a violent lab accident, crushed beneath fallen shelves during a robbery gone wrong. Rumane’s world collapsed into grief and silence. By the time she transferred schools, she had become a ghost, avoiding others and clinging to isolation to keep the pain from growing.

Fate intervenes through Akio Hukitaske, a quiet teen with a pharmacist’s mind and hidden scars. His persistence forces her to face memory, grief, and connection. In autumn winds and falling leaves, Rumane finds the strength to grieve, to scream, and to take one step forward.