Multiverse of the Undead

Brayden parents force him to take a pill everyday but one day he forgets to take it, he realizes his parents never existed and the reality around him changes entirely.........

A person plagued by voices and paranoia kills his friend Robert, suspecting him of mistrust after installing a CCTV camera. He buries Robert in the backyard and manipulates the CCTV footage to avoid detection. When the police investigate Robert's disappearance, the protagonist hallucinates Robert accusing him of murder and confesses. Despite his confession, he continues to be haunted by Robert's voice and hallucinations, driving him further into madness.