Li Yan had just transmigrated to the Demon-Haunted Cultivation World when a sinister Old Daoist force-fed him a Medicine Pill laced with parasitic gu worms. On the verge of becoming a mere disposable s*ave for pill production, Li Yan unexpectedly awakened the Side Effect Collection System. The harsher the side effects, the more potent the reversed benefits!

Swallowed the Blood Egg Pill: Side effect reversed—Blood Qi Theft enabled! Steal the cultivation base of others!

Cultivated the heretical Burning Lamp Technique: Side effect reversed—Ignite enemies and summon a Golden Body Avatar!

Soaked in the Myriad-Aged Corpse Blood: Side effect reversed—Transform into a Ten-Thousand-Foot Golden Body!