Ask the Phantom Thieves Channel (怪盗お願いチャンネル?), simply the "Phantom Thief Channel" or even abbreviated "Phantom Ch." (怪チャン) is a website created by Yuuki Mishima to promote the Phantom Thieves of Hearts in Persona 5.
Persona 5 Edit
The website holds the anonymous poll "Do you believe in the Phantom Thieves or not?" and collects submission of heist requests.
Persona 5 The Animation The Day Breakers Edit
Naoya Makigami makes a request for help to the Phantom Thief Channel that his brother Kazuya Makigami is physically abusing him. Kazuya himself almost makes a request to make his other gang members disappear, but ultimately decides not to send it.