Professor Funabashi dedicated his research to Seeds, extraterrestrial materials that fell to Earth and bonded with terrestrial lifeforms. These Seeds imbued hosts with formidable power but also mutated humans and animals into ferocious monsters. Following her father's death, his daughter Satomi continued his legacy, focusing her research on peaceful applications for Seeds even as their effects escalated global chaos. Her work drew the dangerous attention of Seed Satan, an organization pursuing world domination through Seed exploitation, which targeted Satomi for her knowledge and specimens. To shield Satomi from Seed Satan, her best friend Aoi Ichikawa voluntarily fused with a Seed, gaining transformative abilities to become her superheroine protector. Throughout the conflict, Satomi remained steadfast in her scientific mission, aided by allies including members of the student council morals committee. Her research and safety became pivotal in the ongoing battle against Seed Satan, unfolding amidst their otherwise ordinary school life.