Hotaru Kusakuri, a petite 12-year-old with long cascading curls of jet-black hair and large, luminous eyes accentuating her porcelain-doll features, hails from an ancient lineage steeped in spiritual traditions. Assisting at her family’s temple, she occasionally covers duties for her cousin Hibari, whose simmering resentment stems from Hotaru’s innate talent and fear of being overshadowed.

Warm and effortlessly sociable, Hotaru navigates interactions with ease. Her supernatural gifts yield uncannily precise weather predictions and palm-readings that unveil obscured truths from a person’s past—though these visions falter against individuals shrouded in darkness or whose hands remain partially concealed, leaving her unsettled.

Transported to an unfamiliar realm, she narrowly escapes crocodile-infested waters alongside Matsuri and Chimaki, rescued by Team Summer B. Later, while awaiting the team’s return at Bungo Fuji with Botan, Matsuri, and Chimaki, a landslide traps her in a cavernous pit. Her attempts to decipher Ango’s palm prove futile, yet she uncovers Ryou’s buried secret with chilling accuracy.

During the ghost ship Fuji crisis, her strategic coordination of communication networks becomes pivotal in averting catastrophe. Though fragments of her past before the freeze linger in shadows, her journey underscores a deepening trust in her instincts as survival pressures and shifting alliances test her resolve.