Mental Illness Has a System That Is Invincible

In the early stage, the protagonist is a normal person who has superpowers and is driven crazy. After committing suicide, he directly owns the system and begins a journey of time travel. In the later stage, the protagonist will become more and more stupid and more powerful. The protagonist is hunted down because of his superpower that can be constantly resurrected. The protagonist once had his parents and family members who were forced to be alone because of constant resurrections. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.