Prolouge
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While driving down a mostly unknown and abandoned forest road, a truck carrying radioactive materials crashed into a fallen tree, causing the cargo to spill and reach a butterfly collecting pollen from a sunflower...
The flower and the butterfly soon transformed due to the radiation, gaining more humanoid forms. As the flower grew, its stem split in two at the bottom and formed her legs and feet. The stem thickened and curved and two fleshy mounds grew near the top. Its leaves split into a hand and five fingers. A face formed on the sunflower as the middle shrunk. The petals multiplied and formed an afro.
As for the butterfly, its wings shrunk and folded into its shoulders, and gained a humanoid form, complete with fleshy mounds. Its eyes morphed and it gained a human face. Its antennae grew into hair with two parts sticking out the top.
The butterfly was quite curious as to what caused this, while the sunflower was overwhelmed. And just when a 10 year old rode by on his bike, they realized they were nude.