To the Anon that asked earlier on

satsunyan has kindly answered your question. (Seeing that I have no idea how to reply to replies in tumblr OTL, I’ll just paste the reply here)

PS. I don’t see an arrow. I only see the word block. OTL

Satsunyan:

it looks like something made from PaintoolSai. in Japan it’s the easiest, smallest and most convenient editing tool, and most people use it. :3

EDIT:

and I typo’d OTL. It’s Paint Tool Sai. Words separate OTL. Sorry Anon-san! ;A; and replying just click the arrow beside the reply, and it should let you reply. =D