Anime. Chiaki Nanami's Punishment (七海 千秋のおしおき) is an execution featured in Danganronpa 3: The End of Hope's Peak High School - Despair Arc, with Chiaki Nanami being executed.

What episode does Chiaki get executed?

Please Insert Coin is an execution in Danganronpa 2: Goodbye Despair, with Chiaki Nanami and Monomi being executed.

Why did Chiaki get killed?

Her initial plan was to let Chiaki watch the Despair video, but upon realizing how much Class 77-B loved her, she decided to kill Chiaki in order to throw them all into despair.