there isn't a torrent for it, not an active one
Learn mIRC, get it here instantly:http://www.arigatouhell.com/forum/botlists.php?sid=7278700f9ac53d15e4c52f7f1ede51e2
Here's a guide: go to their irc channel but keep that page open. On the page, click MrRobot. Find the episode you want and click it. Copy everything after the word "trigger" and paste it into the irc chat.
So for episode 1 you'd paste:
/msg [Arigatou]MrRoboto xdcc get 425
To get to the channel just install IRC and click the irc link on the top of the website. It's all simple really.
And now you know mIRC.