Botan Saotome guides Team Summer B with survival expertise honed during her pre-apocalyptic career as a police officer. Her imposing stature, muscular frame, and striking Rastafari hairstyle—long, dense braids cascading when loose—command attention. A tragic drunk-driving accident claimed her unborn child in her final trimester, fracturing her marriage and propelling her into the Seven Seeds project, seeking refuge from a world rife with preventable suffering. Her law enforcement experience and rigorous training forged the resilience needed to lead in a ravaged future.

Gruff yet fiercely protective, she prioritizes her team’s survival above all. Initial clashes test her authority: Semimaru’s violent skepticism, Arashi and Natsu’s desertion. But her courage in crises—dragging teammates from crocodile-infested waters despite injuries—slowly transforms distrust into dependence. Pragmatism drives her to weigh lethal force against Ango and Ryou upon uncovering their hidden weapons, though she opts for restraint.

A defining moment arises when she discards the potassium cyanide necklace issued by project head Takashi, defying the glorification of “noble death” to embrace relentless survival. This act cements her resolve to shield her team through tenacity, not surrender.

Beneath her stoicism lies vulnerability: quiet longing for her ex-husband’s happiness in a new family, and mentorship of Natsu, urging selfless love that redirects the younger woman’s affection toward Arashi’s reunion with Hana.

Environmental calamities—volcanic eruptions, collapsing terrain—continuously challenge her leadership. She devises escape routes, navigates lethal landscapes, and binds the group together through adaptability and calculated risk. Her strategic acumen and unyielding resolve solidify her as the team’s cornerstone, both tactically and emotionally.