Not sure if Yoorah is serious or not...
just use peerblock....
Doesn't work at the ISP level. You have to go with a seedbox & vpn (encrypted) and download only through sftp (encrypted). They can't intercept encrypted transmissions, and it would be too big of a hassle even if they could decrypt them.
Under the agreement a third-party company will collect the IP-addresses of alleged infringers on BitTorrent and other public file-sharing networks. The ISPs will then notify these offenders and tell them that their behavior is unacceptable. After six warnings the ISP may then take a variety of repressive measures, which includes the option to cut off the offender’s connection temporarily.
Unless you pay for the touhou stuff you've downloaded, you've downloaded illegally. Yes, even the doujins.