Healing for him is killing.
Take any soul from their body, smile happily when they ask to not kill them in despression voice, is really the best healing for him.
His Amygdala was errored, and there's no way to fix it.
Amygdala:
• noun [ C ] • ANATOMY • specialized •
UK 🔊 /əˈmɪɡ.də.lə/
US 🔊 /əˈmɪɡ.də.lə/
plural amygdalae UK /əˈmɪɡ.də.liː/ US /əˈmɪɡ.də.liː/
Mean: One of two parts of the brain that affect how people feel emotions, especially fear and pleasure.