Hametsu No Ganbou Daiisshou Review
It sounds like you're referring to (破滅の願望・第一章), which translates roughly to "Desire for Ruin: Chapter One" — possibly a dark fantasy, visual novel, or amateur manga/dōjinshi title.
The chapter concludes with Kaito’s "first death" and his subsequent escape, marked by the brutal murder of a prison guard. This scene is often cited by fans as a turning point, as the narrative humanizes the victim to emphasize Kaito’s loss of empathy. Key Characters and Themes hametsu no ganbou daiisshou
Here's some information about it:
The story explores how hatred can become a comforting, singular purpose when everything else is stripped away. hametsu no ganbou daiisshou
Driven by an all-consuming "desire for destruction" after his psyche is shattered. Antagonist hametsu no ganbou daiisshou