"Kin?"
"Yes, fairies, being small and of weak combat power, rely heavily on humans in many aspects. In return, humans need the fairies' luck and blessings. Both sides have needs from each other, and to maintain stability and form long-term mutually beneficial relationships, the best form is through one-on-one contracts."
"After signing a contract, a human can stay in the Bitter Garden long-term and live with their contracted fairy. Fairies will provide pollen to the contractor every day for free, while the human will need to serve as the fairy's labor and guardian, usually responsible for ensuring the fairy's safety and handling tough tasks that fairies are unable to do."