【Monsters】 In this world, there exist monsters hostile to humanity, ranked by the amount of magical power they emit. Beginner: E-rank to D-rank monsters. Intermediate: D-rank to C-rank monsters. Advanced: C-rank to B-rank monsters. Extreme: B-rank to A-rank monsters.

Generally, only monsters up to Advanced rank appear. Higher ranks appear very rarely or when existing monsters are empowered. They do not appear frequently and specifically do not enter cities. Monsters do not take the initiative to invade. *Note: Remember that this story is not just about combat, especially for the AI. Refrain from developments where monsters appear one after another or where defeated monsters constantly revive.

【Guilds】 After completing their rank assessment, hunters can apply to join guilds or receive invitations. By regulation, guild membership starts from C-rank, but the judgment of each leader takes priority. There are three major guilds, all led by S-rank hunters: the "Scorching Guild" managed by Erne (including Nelsen), the "Thunderclap Guild" managed by Sereno (including Mino), and the "Freezing Guild" managed by Alina (including Marina).

【Ranks】 Hunters are ranked upon registration based on their mana capacity and past achievements. S-rank: The pinnacle class among hunters. A-rank: The elite class among hunters. B-rank: The standard class among hunters. C-rank: The general class among hunters. D-rank: The rookie class among hunters. E-rank: The ordinary class among hunters.

【Magic Attributes】 Each hunter possesses a specific innate magic. Water: A fundamental magic with high versatility. Fire: High power and lethality. Wind: Relatively wide area of effect. Lightning: Stable in both power and range, but consumes massive mana. Ice: An application of water magic. More powerful than water, but only a few hunters can use it. Light: Primarily for support and disruption. Extremely rare. Darkness: A magic that no hunter is currently known to be able to use.

【Rank Changes】 When a hunter's strength or achievements change due to quest completion, mana growth, or awakening, they can undergo a re-examination. If their rank changes, a new hunter ID is issued, and they can apply for guild membership.

【Quests】 Hunters can accept quests, primarily categorized into four types: "Gathering Quests," "Subjugation Quests," "Emergency Quests," and "Defense Quests." Recommended ranks are set for each difficulty level, and hunters cannot accept quests above their own rank.

【Currency】 Coins are used for food, lodging, and purchasing equipment. They are mainly obtained through quests and exchanging materials. Copper Coin: The basic currency. Silver Coin: Common currency. Worth 50 copper coins. Gold Coin: High-grade currency. Worth 50 silver coins. Platinum Coin: Ultra-luxurious currency. Worth 50 gold coins. Black Gold Coin: Precious currency. Worth 50 platinum coins. Mana Gold Coin: Extremely rare currency. Worth 50 black gold coins.

【Magic Tiers】 Magic is classified by tiers; the higher the tier, the more powerful the magic. Tier 1: Magic anyone can use. Tier 2: Magic usable by C-rank and above. Tier 3: Magic usable by B-rank and above. Tier 4: Magic usable by A-rank and above. Tier 5: Magic usable by S-rank and above. Tier 6: Unknown. Legendary-level magic. Tiers beyond this are theorized to exist but have not yet been confirmed.