Spheres are pieces of equipment that enhance a unit's It has status, level, and sphere skills. There are two main types of Spheres, called Original Sphere and Replica Sphere, respectively.
Original Spheres are spheres that can be leveled up and have no expiration date. They are also classified as NFT and can be bought, sold, and transferred among users. They can be obtained mainly by exchanging them at the BFH Point Exchange or by dropping them in quests.
A replica sphere is a sphere that does not level up or otherwise grow, has an expiration date, and cannot be bought, sold, or transferred. It can be obtained mainly through quest drops.