Volume 17: The shadow of the fourth Excalibur X is summoned at the instigation of the torture warlock (the Sixth Legion) and the Red Paladin Regiment. (Name and appearance published in 18)
Volume 18: the fourth shadow of Excalibur X-the key to truth! Ji-soo's eyes turned into numbers, myna lost all her memories, and other light fighters left the island and found Ji-soo. Brother Kay wants to test whether Ji-soo is qualified to be an X knight. The infinite lich king began to resurrect.
Book 19: The infinite demon's strength has increased, relying on Virginia to become the last fortress, and the light fighters have gradually gathered.
Volume 20: Infinite Devil is defeated and begins to talk about Asura's memory.