I Became the Death God-Level Young Cult Leader of the Demonic Cult

Am Yeong, the assassin who infiltrated the Demonic Cult to sever its lineage. He finally succeeded in killing the Young Cult Leader and returned to the Murim Alliance, but… “Strategist, why……” “You should not have returned. If you wanted to live, you should have hidden instead of coming back to the Alliance. Did you intend to openly advertise that we were the ones who killed the Young Cult Leader?” The price of his loyalty to the Alliance was death. However, when he opened his eyes, he had become the shut-in loser of the Demonic Cult, the Seventh Young Master. Not only that, but he had even returned to the past. “In this life, no matter the cause,” I will get revenge on the Alliance Leader and the Strategist who used me like a dog and discarded me. The revenge journey of the genius youngest master of the Heavenly Demon Cult, Dan Woojin, begins. — Description from novelcodex.org