if killua and gon had twitter, killua would post pictures of alluka and where they were, using his account as a photo book. gon, well he would as well, but he’d be way more active. he’d post pictures of the fish he’s caught and birthday messages to his friends.
completely forgot, i also feel like killua would make a playlist for gon and have the post go something like this:
k: *gon’s @* i made you a playlist
g: *replying to killua’s tweet* omg! thank you killua, you’re the bestest best friend!!
k: cut it out stupid.