Hacking the other users on the screen at the left ( the messaging screen I think it's called)
https://youtu.be/SEVhpAutmhU?si=aeh9OOjmb0Ggmt6I
this is a link to a playthrough of the whole game, check 58:58, similar to what they do, we need to hack all of the people in our friend list so as to get all the fanarts and other stuff