A Record of a Mortal's Journey to Immortality: The Ink Jiao's Vengeful Soul

[Mortal's Cultivation fan fiction, monster protagonist, System devouring, decisive killing, trope subversion] After transmigrating, Zhu Guang becomes a flood dragon in the Blood-Colored Forbidden Zone, destined to become a stepping stone for Han Li and Nangong Wan. At the brink of life and death, the True Dragon Devouring System awakens! A beginner's gift pack drops, awakening his True Dragon bloodline and doubling his power! Facing Nangong Wan's Vermilion Bird Ring and Han Li's Golden Light Brick, Zhu Guang refuses to be a lamb led to slaughter. He transforms into a primordial ferocious beast and swallows both protagonists whole! "Ding! Devoured the Child of Reincarnation, Han Li, triggering karmic suppression! The Child of Reincarnation has been sealed for a thousand years!" "Ding! Devoured a Core Formation Stage cultivator. True Dragon bloodline purity increased!" With the Heaven Palming Bottle in hand and the Black Dragon Pool at his command, Zhu Guang feeds on the flesh of countless demonic cultivators and shuts himself away for a hundred years of arduous cultivation, setting out on the path to invincibility!