This is a story of wind and butterfly. Two orphans were tricked by fate. The boy was three years old and the girl was in her infancy. Due to this interplay of cause and effect, a pair of brothers and sisters appeared in the forest. Ten years have passed, and the boy has become a teenager. Troubled times are about to arise, but changes have turned into farewells. See how the maple turns into the wind, and how the butterfly breaks out of its cocoon. Destiny... Is it really impossible to find?