Y/n is a cursed spirit- a siren, so she’s visible to both sorcerers and humans. Ever since she could “remember” she’s lived in an Aquarium, a box filled with water for humans to look at, that’s been her reality since she was born a cursed spirit. Shes never known the outside , never known what it’s like outside her box. Until the day Gojo takes his students , Itadori, Fushiguro and nobara to the aquarium to see the cursed spirit, her, who the jujutsu society allowed to live since she’s never devoured a human .