Legend Of The Demon Duo

Zhang Wei was born as the only child of the Wei family, so he was spoiled. Due to this, he became arrogant and complacent. He lived a life of debauchery, and this was used against him, and he lost his family, wealth and influence, and became a beggar. Tired of life, he committed suicide but was offered a second chance at life as a demon. but it comes with a catch, and that is EXTERMINATING HUMANITY!!!!