Last Teenagers of the Apocalypse (2016)

Grim has just died. He's thrown into purgatory and suffers from amnesia as he tries to understand his standing in a post-apocalyptic world. He's guided by his guardian angel Neon while also being haunted by Bones... who is trying to collect his mortal soul. To top it all off, Instagram won't refresh. This is Last Teenagers of the Apocalypse.