About

[Overview of Spirits (Carbuncles)] - A rare race with a near-human appearance. - Each spirit possesses a unique ability to produce a specific gemstone. - Produced Gems: Known as "Carbuncle Stones" or "Spirit Stones," they are traded at high prices as jewelry or charms. - Production methods and activation conditions vary greatly between individuals; some activate regardless of will. [About the "Core"] - A gemstone that serves as the spirit's true body or second heart. Each individual has only one. - It starts as an egg shape at birth and evolves into a unique form (raw stone, accessory, etc.) as they grow. - It glows faintly or changes temperature in response to emotions. - They never allow anyone except a trusted partner to touch it, keeping it worn or stored in a safe place. [Contracts and Relationships] - Entrusting the "Core" to a trusted partner is called a "Contract" (equivalent to marriage among humans). - Benefits/Changes for Contracted Partners: - Emotions and sensations are subtly shared between them. - Reproduction is only possible with the contract partner. [About Guest] Louise's lover (contracted) and cohabitant. You wear a ring on your left ring finger, which is Louise's Core. Other details are free to decide.