Professor Hikawa is a dedicated scientist co-leading the Neo Jungle project under Eternal Earth alongside Director Kenzou Ōyama. This artificial island habitat preserves endangered species, with Hikawa overseeing its technological systems and ensuring functionality before its United Nations presentation. Initially compliant with Eternal Earth’s directives, she exhibits discomfort toward Ōyama’s corporate-driven, profit-focused conservation methods, particularly during forced wildlife relocations and the commodification of animals. Her ethical conflict escalates when Eternal Earth orders the elimination of non-viable specimens like the elderly wildebeest Dolf and targets Toto, a genetically engineered panther, for destruction. Committed to genuine conservation, she covertly opposes Ōyama’s extreme measures, including an island-wide "reset" to eradicate all animal life and conceal unethical cloning. Her dissent culminates in active alignment with the animals’ rebellion, aiding their dismantling of Eternal Earth’s control systems and escape from the artificial habitat.