(Dark antihero + old-school sci-fi beast taming + ruthless and decisive + abyssal invasion + invincible protagonist) This is a world where humans and spirit beasts coexist, and power and contracts reign supreme. Lin Yan, a young man of mysterious origins, bears a strange flame-shaped mark on his arm, while a forbidden power from deep beneath the earth lies dormant within him. He forms a life-and-death pact with Ye Yan, a shadow wolf pup bearing purifying fire and fated to be a "Gatekeeper," then enters Northern Frontier Academy, a cradle of the strong beneath an endless blanket of snow.
There, he meets Xi, a calm and astute speaker of nature's language, and Li Jincai, a generous and wealthy master of the Treasure Hog. Together they form a seemingly odd but extraordinarily promising team. Yet behind the glory of their S-rank evaluation lie the council's covert surveillance, fierce rivalries between ancient clans, and the ominous stirrings of the abyssal rifts.
From the astonishing duels of the academy tournament, to life-and-death missions deep in the Frostwood Sea, to the trials of blood and fire on the northern front... Lin Yan and Ye Yan grow rapidly through countless challenges, their twin flames burning away every obstacle as the truth behind the Gatekeeper's fate gradually comes to light. The accidentally hatched young Mountain-Melting Dragon, Rong He, with its bizarre ability to devour all things and purify the abyss, becomes an unpredictable force capable of turning the tide of battle.
But one crisis follows another. The roar of lord-level monsters tears through the sky, dark currents surge beneath the academy, and the council's reach extends everywhere. Lin Yan and his companions must move forward together, fighting their way through trust and betrayal, glory and conspiracy.
When the abyssal tide rises once more, an ancient contract is rekindled in the flames. How will the young man and his spirit beast use purifying fire to burn away the darkness and fulfill the Gatekeeper's duty?
