Ruri

Ruri serves as the revered shrine maiden of Ishigami Village and is the older sister of Kohaku. As the sole successor to the Hyakumonogatari—an oral tradition preserving the sum of human knowledge—she carries an immense cultural responsibility on her shoulders. For years, she battled a debilitating lung illness that left her physically frail, until Senku's groundbreaking antibiotic formula restored her health. Empowered by her recovery, Ruri leverages her vast repository of folklore and her natural charisma to become an indispensable pillar of the Kingdom of Science, excelling in intelligence gathering and diplomatic outreach.